Correct
投师
/ tóushī /
Strokes
Definition
to join a guru for instruction
Example
As a Verb
seek instruction from a master/teacher; sit at sb's feet; be a disciple of a master/teacher
1
Tóushī
投师
xuéyì
学艺
learn a trade from a master
2
Tóushī
投师
fǎngyǒu
访友
learn from a master and call on friends to exchange knowledge/skills