Fenghuang Lake CBD is the most concentrated hub of leading companies in the segmented global industries within Jiaxing, Zhejiang. Since 2010, with the completion of the Zhenshi Hotel and Zhenshi Headquarters Building—two iconic high-rise towers located on the south and north sides of Fenghuang Lake—these structures have become urban landmarks. During this period, as the physical industry grew central to China’s national economy, China Jushi Group, the global leader in fiberglass production, also experienced rapid development.
In 2016, the client once again engaged Qicheng Design to discuss the positioning of the Giant Stone Technology Building. Given the rapidly evolving environment, the client sought a building that could adapt to current usage requirements while enabling flexible space management, thus allowing for greater potential in future value transformations.
From this vantage point, the Zhenshi Hotel on the south bank of the lake is visible. It is the earliest super high-rise hotel in the area, designed by Qicheng in 2007. © Qicheng Design
Fenghuang Lake CBD remains the most densely populated area for leading global segmented industry companies in Jiaxing. The first building on the left is the headquarters of Zhenshi (Qicheng Design). © Qicheng Design
▲ Viewed from the lake, the building’s cut surfaces create dynamic light and shadow effects. © Qicheng Design
▲ Architectural tension created by sectional and diagonal lines. © Qicheng Design
The Giant Stone Technology Building is positioned along the central axis of Fenghuang Lake CBD in Tongxiang City, facing Fenghuang Lake Park to the south and adjacent to Central Park in the CBD to the east. The building officially opened in May 2022.
Function and Design
The rapid pace of technological advancement and evolving work modes have shortened the lifespan of fixed functions and spaces. This calls for a rethinking of traditional office layouts. Spaces with rigid boundaries tend to be less efficient; thus, adaptive and flexible design is a key focus for this project.
▲ Shape generation process. © Qicheng Design
The building consists of two towers, one at 120 meters and the other at 60 meters, both oriented to maximize views of the lake to the south. Two activity centers connect these towers vertically in the middle section, serving as vibrant hubs that facilitate easy access to all office floors.
▲ View of the sky corridor from the inner courtyard. © Qicheng Design
The main building, auxiliary structure, and aerial activity center overlap in a “┏┫” shape, optimizing the viewing surfaces, enhancing operability, flexibility, and service efficiency. This configuration was the key factor in selecting the overall form.
To create a natural relationship between the towers and connecting volumes, each section features distinct cutting planes. The facade design follows this geometry, inclining 12° from the vertical to form a unique curtain wall system.
▲ Functional distribution diagram. © Qicheng Design
The podium serves as a service area extending beneath the two towers, housing a large auditorium, restaurant, reception center, swimming pool, and other auxiliary facilities. The inner courtyard formed by the podium aligns with the entrance hall, creating a continuous axis.
▲ The courtyard connects the towers and podium seamlessly. © Qicheng Design
▲ Axonometric diagram. © Qicheng Design
Sky Corridor
The Sky Corridor is situated 60 meters above the auxiliary building. The second-floor steel structure features five inclined glass surfaces housing exhibition spaces, conference rooms, employee training areas, a leisure bar, fitness facilities, and more. Atop the platform, a rooftop garden overlooks the lake, offering panoramic views of Fenghuang Lake and serving as the premier employee relaxation area in the district.
▲ The two towers are linked by the aerial activity center. © Qicheng Design
The overlapping sliced curtain walls create rich, layered visual effects. © Qicheng Design
▲ Building blocks with the Sky Corridor serving as a functional and vibrant hub. © Qicheng Design
▲ Sectional perspective highlighting the high atrium and small courtyard leading to the rooftop garden, created by staggered internal floor slabs. © Qicheng Design
From the Sky Corridor, views of Fenghuang Lake reveal diagonal curtain wall components that function as ventilation windows, harmonizing indoor environmental changes. © Qicheng Design
Lobby and Courtyard
The lower two floors of the twin towers connect horizontally to create an approximately 100-meter-wide space, which extends vertically into a water-featured courtyard, forming a T-shaped lobby. This expansive horizontal area serves as a reception, gathering, and ceremonial space. The vertical corridor links the main building with auxiliary functions, while the courtyard’s water features stretch into the lobby, forming a flexible central axis that enhances visual and immersive experiences. The lobby is enclosed by 10-meter-high ultra-clear white glass panels that continue the texture of the upper inclined curtain wall, tapering gracefully near the floor.
▲ Variation in curtain wall component placement within the lobby. © Qicheng Design
On both sides of the lobby, 10-meter-high transparent ultra-clear white glass panels connect seamlessly to the courtyard landscape. © Qicheng Design
▲ Inner courtyard water features and connecting corridors. © Qicheng Design
Asymmetric Canopy
The entrance canopy is formed by two triangular folded aluminum plates, reflecting the building’s overall cutting technique. The rhythmic pattern of the main building’s curtain wall serves as a backdrop, creating a distinctive arrival experience. The asymmetrical design, while controversial for a corporate headquarters, was embraced by the client following the designer’s recommendation, resulting in a highly praised final effect.
The canopy’s primary material is anodized aluminum, which emits a striking metallic sheen under various lighting conditions.
▲ A minimalist entrance canopy made up of four-meter-long anodized aluminum panels. © Qicheng Design
12° Inclined Curtain Wall
The building’s form features multiple chamfers creating subtle angles. Its facade employs a 12-degree inclined curtain wall system. Each curtain wall panel is a parallelogram, with continuous diagonal lines wrapping around the building’s surface. These diagonals serve as functional zones housing the curtain wall’s structural system, ventilation, and outdoor lighting.
The ventilation units are integrated within the glass panels, providing sound insulation and continuous 24-hour air exchange unaffected by external conditions.
Lighting elements are concealed along the diagonal lines, designed to be visible from different angles while remaining unobtrusive during daylight. This effect is achieved by adding external fins to the light troughs and incorporating slots on the curtain wall components, enhancing both functionality and aesthetic detail.
▲ The inclined curtain wall members serve as belts for the structural system, ventilation, and outdoor lighting. © Qicheng Design
▲ Ventilation units and fins integrated into curtain wall components. © Qicheng Design
Each curtain wall glass panel is a parallelogram, with silver-white members rising continuously around the building. © Qicheng Design
Fenghuang Lake has emerged as a new city center. In May this year, Tongxiang announced the official opening of the Giant Stone Technology Building. This milestone marks the culmination of 15 years of collaboration, shared values, and trust between the city, the client, and the design team. The projects we have designed and realized are gradually bringing positive transformations to the natural ecology, corporate growth, industrial development, and urban evolution of the Fenghuang Lake CBD area.
▲ In use. © Qicheng Design
Project Information
▲ General layout plan, Site plan. © Qicheng Design
▲ First floor plan, Level 1. © Qicheng Design
▲ 8th floor standard layout. © Qicheng Design
▲ 12th floor. © Qicheng Design
▲ 13th floor. © Qicheng Design
▲ 14th floor. © Qicheng Design
▲ Elevation view. © Qicheng Design
▲ Sectional view. © Qicheng Design
▲ Sectional view. © Qicheng Design
Project Details
Project Name: Giant Stone Technology Building
Location: Tongxiang, Zhejiang
Building Area: 61,600 square meters
Owner: China Jushi Corporation Limited
Architectural Design: Qicheng (Shanghai) Architectural Firm Co., Ltd
Lead Designers: Shen Lijiang, Shi Zhenglei, Ding Hao
Design Team: Shen Lijiang, Shi Zhenglei, Ding Hao, Yu Wenbin, Zhou Fan, Yin Guilin, Hu Wenyuan, Hu Tengjiao, Li Yiang, Li Zhuangzhuang
Project Leader: Shi Zhenglei
Construction Drawing Design: Ping An Construction Group Co., Ltd
Interior Design: B+H
Curtain Wall Design: Lu Qiyue
Landscape Design: Hangzhou Yuanyi Landscape Design Co., Ltd
Lighting Consultant: Nanjing Peacock Blue Lighting Design Co., Ltd
Main Materials: Glass curtain wall, ultra-clear white glass, fluorocarbon-sprayed aluminum panels, anodized aluminum panels
Construction Year: 2022
Architectural Photography: Liang Wenjun
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