Haikou, what is the proportion of foreigners?

Mandarin is common ~ ~ There are many tourists in Hainan ~ ~ Basically everyone can understand Mandarin ~ So don't worry about language problems! I'm from Haikou, and I'm in college. Only when a Hainanese meets a Hainanese, or when you strike up a conversation with a Hainanese in Hainanese, does he speak Hainanese ~ Basically speaking Mandarin ~ There are a lot of foreigners in Haikou ~ Many of them come here to study, graduate and stay here like me ~ ~ Unlike foreigners in mainland cities, as long as they are migrant workers from Haikou, we think there are not many migrant workers ~ so the foreigners are mainly "mainland immigrants" and settle down.