一路顺风

Safe journey! Bon voyage!

好好学习，天天向上

Study properly and make progress every day

一寸光阴一寸金，寸金难买寸光阴。

Every moment in time is priceless. All the money in the world cannot buy you any time.

一年之计在于春，一日之计在于晨。

One must make plans for the new year in Spring time. One must make plans for the day in the morning.

三心二意

Being indecisive

人山人海

A sea of people (a large crowd)

岁岁平安

Have a safe and peaceful year!

七上八下

Being nervous

上有天堂，下有苏杭

Up in the sky there’s Heaven. Down on earth there’s Suzhou and Hangzhou.
(Suzhou and Hangzhou are as beautiful as Heaven.)

助人为乐

Helping others is an enjoyable thing

人人为我，我为人人

All for one and one for all

一日不见，如隔三秋

Not being able to see someone for a day makes one feels like being away for 3 years. (How much you miss that person.)

谈情说爱

To be in love

早睡早起身体好

Going to bed early and waking up early will make one healthy

斤斤计较

Being ungenerous/penny pinching