Listen, I literally lived there for years, I have family there, and I visit all the time. People buy and use Chinese goods every day. Xiaomi smart phones and gadgets are super popular. Chinese phone brands like realme and oppo outcompete local brands. People buy Chinese groceries all the time, especially flavorings and hot sauces. People import Chinese books, watch Tencent TV, and listen to Chinese music. They speak the same language so of course people will buy goods and media content from China.
Even though virtually everyone hates the Chinese government, most people still interact with Chinese people, media, or goods on a daily basis. And this isn’t even getting into business supply chains; Taiwan’s dirty secret is that most Taiwanese businesses are very pro-China, even though your average person is worried about China having too much influence.
Where do you think TSMC buys the concrete for their facilities comes from? The copper wiring? What about the rare earth minerals that are used in the production process to make chips? Where do they source their steel from? There are thousands and thousands of components that go into building the capital that makes chips, or just into making the buildings that make up their facilities, or even just the materials for the dormitories for their workers. There is inevitably a ton of Chinese products being used at different points in the TSMC supply chain. The most advanced components are from the US, Europe, and Japan, but numerous other components will be made in China.