To start something that creates many new problems.
开始做一些会带来许多新问题的事情。 (Kaishi zuo xie hui dailai xuduo xin wenti de shiqing.)
"By questioning the policy, he opened a can of worms."
"通过质疑政策，他打开了一罐蠕虫。" (Tongguo zhiyi zhengce, ta **dakai le yi guan ruchong**.)
to reduce the amount or pressure of something
to work at a second job, especially secretly or part-time
a person with no prior knowledge or experience
to be confident and relaxed about who you are
to watch or monitor something or someone carefully
someone who attracts attention and stands out
