Rumor has it that Chang is dedicated to becoming an expert in whatever skills required by the roles he plays.

传说只要角色要求他拥有哪方面的技能，张震就会努力成为这个领域的专家。

youdao

It's then sold on to bigger labs for processing into cocaine hydrochloride - coke, Charlie, Chang, whatever.

BBC: Transcript: Cocaine: Alex James in Colombia

"You get this feeling I can do whatever I want, you know, nothing is going to really hold me back, " said student Calla Chang.

CNN: Retracing the footsteps of young Obama