I worked for a company that provides web and app tracking (kinda like google analytics, but more granular data and user metrics). Any Chinese prospect that engaged with us had to use a myriad of proxies because the Chinese govt blocked our American servers. Also no Chinese prospect ever paid a dime. They would beg for extended trials and bring engineers in to ask questions about the software, requesting server side code, all the while they attempted rip off our product, after a year I became ‘too engaged’ with other projects to pursue opportunities with Chinese companies.