There are special Korean teachers in the foreign teachers' accommodation area at the east gate of the East Campus of Yangtze University (Petroleum College). They offer some Chinese training courses every semester. The price is moderate, much cheaper than the training institutions in Shashi, and the quality is good. After all, they are full-time teachers in universities. You can go to the East Campus of Yangtze University to inquire!

Finally, I wish you success! !