At the end of 2016, SWA was invited to participate in a competition for the Hexin Island by the owner, and won first prize. The following year, SWA continued to deepen the plan and provide further detailed design. Hexin Island is an artificial island built to cooperate with the Sanya International Duty-Free City business district, located in the inland river, right next to Duty-Free City Phase 1, a 800-meter-deep portion of Haitang Bay. The project covers an area of about 45000sqm on the 570-meter-long island. The island is connected to the mainland by the Yunjie Bridge and Block 1 of Duty-Free Mall. The design of Hexin Island makes full use of the different characteristics of the surrounding water banks and creates an attractive space where people can enjoy the water.
The core of the design includes the ecological waterfront on the west, the urban waterfront on the east, and an “experience axis”on the island. The three nodes together constitute the experience network of the site.河心广场为强调欢聚和动感的入口。车行落客区，步行桥，雕塑型种植池相映成辉。步行桥的竖向线条的悬索造型取意于“云戒“。车行落客区的种植池采用了波浪的有机造型，象征云海。雕塑性的种植池宛如云海中的游鱼，在整体的走向上限定了人流的走向，也给休闲的座椅区增加的趣味。椭圆形的水池在落客层是反射建筑和云戒的镜池。镜池的收边沿大台阶形成跌水，把落客广场和一层的商业街用水系联系起来。此处“鱼”水交织，令人们留连驻足。
The entrance at Hexin Plaza emphasizes gathering and dynamic interaction. The car drop-off area, pedestrian bridge, and sculptural planters reflect each other in splendor. The pedestrian bridge’s vertical suspension cables are inspired by the near-permanent equatorial "cloud ring" while the planter in the drop-off area adopts the organic shape of waves. Together, they symbolize a sea of clouds, with the planters as swimming “fish”. The drop-off guides the flow of people and also adds visual interest to the leisure seating area. An oval mirror pool on the drop-off level reflects both the building and the cloud ring. Large steps along the edge of the mirror pool form a water drop, which connects the drop-off plaza with the water system of the commercial street on the first floor. Here, the "fish" and water are intertwined, enticing people to pause and linger.商业内街，强调了流线性和动感的商业走廊，其中的铺装曲线把人流的动线和商业建筑结合起来，为场地带来特有的愉悦感。
The curving inner street emphasizes Hexin Island’s linear and dynamic commercial corridors, inviting a flow of visitors to experience the unique pleasures of the development’s commercial buildings.
Carnival Plaza, an oval amphitheater and stage for the performing arts, is a popular feature. The combination of staggered wooden platforms and planting ponds provides a flexible space for viewing performances.
The Light and Water Dancing Platform offers gorgeous night views of Haitang Bay, with musical fountains and dynamic water dance displays on its expansive surface. A catwalk for fashion shows traverses the water, making full use of the height difference between the water stage and the trails and secluding the backstage space out of sight from the audience.
镜水浮岛——无边镜池内的鸡蛋花型岛屿，树荫下，瞭望水天一色。The flower-shaped Mirror Water Floating Island in the edgeless mirror pond offers shade trees and views where sky and water merge.
The winding Waterfront Trail is built on the natural beach, strung along the city’s waterfront on the east side of the island and meandering through the mountains and rivers.
水滴泉和叠瀑，为访客提供具有童趣和活力的休闲水景。Water Drop Springs and Stacked Waterfalls are two of the development’s playful and energetic recreational water features.
韵律甲板——木质波浪型甲板空间，特色休憩等候空间。Rhythm Deck, a wooden wave-shaped deck space, is a characteristic space for rest and rendezvous.
The Coconut Palm Fishing Village reproduces the history of Sanya Fishing Village, evoking memories of the site.
Island End Garden, a riverside recreation space under inviting shade.
Ecological waterfront: a green riverfront interface in a commercial street.
The entrance of the pedestrian bridge is the site’s primary traffic node.
Hexin Island is the first high-quality experiential commercial district in Sanya. SWA’s design integrates the district, island and commercial plaza to establish a comprehensive new world-class tourist destination. The landscape is diverse, ecologically sensitive, artistic, and interactive – a healthy "Lohas Island" retreat for both residents and tourists.SWA景观设计团队：邓宁，张婧，高琴，David Christensen, 刘和婷, Tyler Johnson, 李博阳，杨南迪
Project Name: Sanya International Duty-Free City Phase IIProject location: Haitang Bay, Sanya, HainanConstruction area: 45,000㎡Construction: China Free (Sanya) Haitang Bay Investment and Development Co., LtdConstruction Documentation: PuBang Design
Architecture Design: BenoySWA Landscape Design: Ning Deng, Jing Zhang, Grace Gao, David Christensen, Ho-Ting Liu, Tyler Johnson, Boyang Li, Nandi Yang