Nai Nai, a 23-year-old live-streamer in Shanghai, China, live-streams in Wuhan city.   Nai Nai’s fans are mostly Chinese men between 15 and 30 years old who post messages and virtual gifts, visible to everyone logged on to her chatroom.   China’s live­streaming industry reached 425 million subscribers in 2018 out of a current total internet user base of more than 829 million, according to government statistics cited in Chinese state media. Live­stream hosting is an increasingly popular career choice, especially for young Chinese women like Nai Nai.