Easier said than done.
Easier said than done.说着容易,做着难。
Meaning: You say something is easier said than done when it looks easy to do, but in fact it's quite difficult to do.
For Example:
1) A:I feel like writing a novel these days. 最近我想写本小说?
B:Really? But easier said than done. 真的吗?可是说着容易做着难。
2) Opening a branch office in China is easier said than done because of all the government regulations.
(ZT)