Where did Xiao Jian and Wei Zi find Erkang in the third part of Princess Zhu Huan in Myanmar?

Later, he was saved by a man named "Third Master", and Er Kang was given several packets of silver vermicelli by coolies. Later, Erkang went to steal something and happened to be met by Xiao Jian and Wei Zi. The swallow went after him, and the others followed him. Finally, they found that it was Erkang who stole things. Finally, everyone found Erkang in the pigsty, only to know that Erkang was "taking drugs" (vermilion powder is drugs)