"花好月圆" (huā hǎo yuè yuán) is a Chinese idiom that means "the flowers are in full bloom and the moon is round", which is often used to describe a situation where everything is going well or everything is perfect. It is usually used to express good wishes or blessings, such as "祝你花好月圆" (zhù nǐ huā hǎo yuè yuán), which means "wish you everything goes well".

Here are some example sentences in Engpsh and their translations:

"I hope your new job will be a smooth saipng and everything will be perfect." (Translation: "希望你的新工作一切顺利，花好月圆。")
"I wish you a happy and perfect pfe." (Translation: "祝你生活幸福花好月圆。")
"I hope your wedding will be perfect and everything will go according to plan." (Translation: "希望你的婚礼花好月圆，一切顺利。")