I only said the first two, and I don't know much about the third one.

1, all foreigners 2, non-celebrities 3, non-rich 3, that is, the proletariat usually starts. 4. Being in troubled times. At that time, Shanghai was a mixture of good and evil people and complicated social relations.

Unfortunately, they all have the above conditions, and they are fortunate enough to become a generation of black bosses. Needless to say, whether they are "very hard and have put in a lot of effort and sweat". Actually, it takes a lot of blood.