The best option in China is to become an English teacher, regardless of whether English is your native language, and regardless of whether you need the money.
From the perspective of this website, earning money is entirely not the purpose of becoming an English teacher, even if you do get something like 10 to 100 Yuan per hour or session.
From the perspective of this website, the purpose of working as an English teacher in China is to have the possibility to hook up with young Chinese women and girls who may become a man's partners in love affairs.
To understand why becoming an English teacher is the best option, let us first analyze other ideas that would come to one's mind when the task is meeting Chinese girls or young women for love affairs,
How about chatting up girls and young women on the street, in department stores, or in McDonald's or KFC's?
Your success rate will be so low that you will soon give up that strategy. First of all, most Chinese young women have a boyfriend. Chinese women take loyalty serious. When indeed they have a boyfriend, they are very unlikely to ditch him for another man, even if that other man appears to be a better catch. And Chinese young women are especially unlikely to ditch a local man for a foreigner. In this respect, they are really different from the girls and young women of the Philippines and Indonesia.
Apart from that, most Chinese girls and young women do not speak enough English for a meaningful conversation with a foreigner who starts talking with them in the public.
Not that Chinese girls and young women chatted up on the street or in public places would react unfriendly. Usually, they will be friendly and helpful (if asking for help was used as excuse to approach them). While anywhere in Southeast Asia, any communication between a foreign man and a local girl or young woman is considered entirely sexual, non-sexual friendships between foreign men and local women are deemed much more realistic in China.
Chinese girls and young women, if they are not prostitutes, are no quick prey. They are very, very unlikely indeed to fall in love with a transient man. A great disadvantage of chatting up girls and young women on the street is that they will consider you a very temporary person at the city where you meet them.
Compared to that setting, a great advantage of being an English teacher is that you are considered a resident somehow. At least you work here, so you will be here for some time… that is how the thinking goes.
Furthermore, the girls and young women you meet as a teacher in English schools already have an interest in the language, and they are aware that any private relationship with an English-speaking foreigner will have a great positive impact on their learning success.
And as an English teacher, one thing you will never be short of, is excuses to arrange private get-togethers. They are always for the purpose of studying... her studying English and your studying Chinese.
Now, if you have decided to give it a try, where should you teach English?
English schools are manifold in China. There are universities and government schools that integrate foreign English teachers with their programs. Usually, they will only accept native speakers of the English language, and they may require additional pedagogic qualification.
They will also often arrange for work permits and provide accommodation, and they will give a teacher a full-time schedule, and pay an according salary.
And then there are the many, many small private language schools that take almost any foreigner on highly individual schedules. If your purpose of being an English teacher in China is just to have an alibi in order to make contact with local girls and young women, then this is where you want to teach.
And possibly not only at one. Teach at different schools, so you will be able to meet many different girls and young women, and make yourself rare at each. The effect of making yourself rare at each school will be that young women will be all the more likely to take their English education further at private meetings.