Did you hire chinese to do the job? They are Ban Lu Chu Jia

They must use wrong adhesive for tile, I hired a Chinese to put tiles in my bathroom, the tiles were easily to remove, I have to hire a Mexican to redo the job, the mexican said the chinese guy used wrong adhesive that was still wet after two weeks.

The chinese guy does not understand english and bought wrong adhesive for tile. So I never hired chinese to remodle my house again.