This article features an exclusive interview with Ms Chen, a Shanghai homeowner, sharing her experience renovating an 8-square-metre diamond-shaped kitchen. Prior to the refurbishment, the kitchen suffered from poor layout and inadequate storage, rendering it a ‘useless appendage’. Post-renovation, employing a ‘four-dimensional remodelling approach’, the layout was reconfigured to establish an efficient golden triangle workflow. Storage capacity was enhanced through multiple solutions, accommodating compact built-in appliances. Visual expansion was achieved using techniques such as light colour schemes. The designer also breaks down the renovation principles and offers pitfall avoidance guidelines. The revamped kitchen now boasts improved efficiency, with a total cost of approximately ¥35,000, proving that small spaces can be both functional and comfortable.