In response to (Message Deleted by Poster) (B)

@B - cunning inguist has given you some sound advice there. I currently live in Chengdu but have not heard of the Sichuan Language School. (Not surprising since language schools in China are as common as rice!).

Firstly what you need to know about is your visa. Have they offered you a visa for the job? By law they are required to do this if they are a legal establishment. Some useful facts for you:

1) A language school can't just hire foreign teachers. They need a specific certificate from local/provincial government to do it. You should ask for a scan of this. (All Chinese but perhaps you can send it to me (email) and I can check it for you.)
2) Working illegally in China carries with it the following penalties: maximum = deportation, then fine. Max. fine = 1000RMB.
3) To teach legally you will need the following:

a) university degree

b) teaching qualification (TEFL, TESOL, CELTA, DELTA)

c) foreign experts certificate - which you get if you have the above two. This can be obtained from the Foreign Experts Bureau. - In Chengdu that's near the football stadium downtown last I checked.
4) with above stuff you can get a work visa. This is a Z visa. To get your Z visa you will also need the following:

a) Temporary Residence Permit - obtainable from local policestation near your residence.

b) Health certificate - there is one hospital in Chengdu responsible for this, on Tongzilin Bei Lu 1 Hao

c) Letter from employer.

Your company/school should be doing all of this for you. If they make excuses it means they are not legal and so cannot provide you with a visa. Watch out!

It sounds to me like this school isn't in Chengdu proper. There are satellite cities such as Xinjin, Pixian, Wenjiang which are about 30min bus ride outside of town. 5k/month is average.

Overtime: National laws introduced in 2007 state the following:

Working overtime (beyond agreed hours/schedule) constitutes a 200% hourly wage
Working on national holidays (look them up online) constitutes a 300% hourly wage

Warning: I have not found a single company whether school or other that abides by this law. In fact by my calculation it is most likely only foreign companies located in China that do. (Laughable indeed)

Other than that you should be fine. Although personally this seminar sounds fishy to me also. There is no guarantee that you will get the job afterwards, also, there is no guarantee that the seminar is in fact a seminar. And not a 2 week forced labour mass-teaching marathon. Beware, ESL industry recruiters are a shifty lot at best. Especially if you are not currently located in China. My advice is if you don't have those qualifications from the first list either don't bother, or get them. Your protection is not paramount to that company. Theirs is. Protect yourself and read forums like this for a better understanding.

For more information you can email me, or visit my website.
Good luck!