You can get your visa canceled refuse to work there and claim one months salary as
compensation also they cannot cancel your visa

Not really like that man, but in some cases, they would be able to get even more than that. For real.

Don't know s[edited] about the visas. That would relate to a completely different kinda law and some backwards s[edited] part of China such as Jiangxi or Xinjiang may not do things by the book either, slip them dirty [edited] a few dollars here and there and anything's legal.

Check this out, bro: http://www.npc.gov.cn/englishnpc/Law/2009-02/20/content_1471106.htm

Article 38 A worker may have the labor contract revoked if the employing unit is found in any of the following circumstances:

(1) failing to provide occupational protection or working conditions as agreed upon in the labor contract;

(2) failing to pay labor remuneration on time and in full;

(3) failing to pay the social insurance premiums for the worker in accordance with law;

(4) having rules and regulations that are at variance with laws or regulations, thereby impairing the worker’s rights and interests;

(5) invalidating the labor contract as a result of one of the circumstances specified in the first paragraph of Article 26 of this Law; or

(6) other circumstances in which a worker may have the labor contract revoked as provided for by laws or administrative regulations.

If an employing unit forces a person to work by resorting to violence, intimidation or illegal restriction of personal freedom, or if it gives instructions in violation of rules and regulations or gives peremptory orders to the worker to perform hazardous operations, which endanger his personal safety, the latter may revoke the labor contract forthwith without notifying the employing unit of the matter in advance.

Article 26 states: A labor contract shall be invalid or partially invalid under one of the following circumstances:

(1) The labor contract is concluded or modified against a party’s true intention by means of deception or coercion, or when the party is in precarious situations;

(2) The employing unit disclaims its statutory responsibility or denies the worker his rights; or

(3) The labor contract is at variance with the mandatory provisions of laws or administrative regulations.

AND

Article 46 The employing unit shall pay financial compensation to a worker under one of the following circumstances:

(1) The worker revokes the labor contract pursuant to the provisions in Article 38 of this Law;

Article 47 Financial compensation shall be paid on the basis of the number of years a person works in a unit, the rate being one month’s salary for the work of one full year. If he has worked for six months or more but less than one year, the time shall be calculated as one year; and if he has worked for less than six months, he shall be paid half of his monthly salary as financial compensation.

I don't think it is just those high schools that a teacher for a training center can't work for. Any kind of part time work is kinda illegal, although most colleges don't give a f[edited]. I wouldn't take a risk on them side jobs when you're working at a training center, those jealous bitches would snitch on your [edited] straight away.

There's a post on Dave's ESL about Shenzhen guys getting visas in Chongqing or some [edited]. I thought it was impossible to not be given a damn visa in Chongqing, that's why all them s[edited] little private schools send their teachers there soon as HK tightened their [edited] up.