Don Chinese people largely speak English?
Theoretically, every Chinese person with a college education knows some English—just like, theoretically, most American high school students know some French or Spanish. But since most people in China do not attend university, the vast majority is completely unable to speak English to any degree. In the end, if you don’t speak Chinese, you will only be able to communicate with a select few people around you. As for the rest, you will be completely isolated from them.