Idioms  - 胸有成竹【xiōng yǒu chéng zhú】

"胸有成竹"比喻人们在做事之前已经有了主意或有了成功的把握。
"Xiong you cheng zhu ". It refers to having a plan or the confidence to succeed before taking on an action.

胸有成竹[xiōng yǒu chéng zhú]
Have a well-thought-out plan, stratagem, etc. in mind;

造句Sentence:
Jiě jué wèn tí de bàn fǎ tā zǎo yǐ xiōng yǒu chéng zhú。
 解 决 问 题的 办 法他 早 已   胸   有      成     竹。
He has already in mind a detailed plan for solving the problems.