Translation: This is probably because 1) Google has a special place in the hearts of Chinese developers. 2) Golang came from the same roots as C,is simple, has OOP features etc. Most Chinese computer science students' first language is C. 3) Golang has a large and specialized library.
Many, but not android. Android sucks. Google helped people in china to search content what the Chinese gov doesn't want them to know; and google's attitude of content censorship.