I wrote a traditional Chinese character, and I want to ask how to write the date of signature.

The signature should be

Qingming in Ji Chun, Wu Jia

It was written in Tomb-Sweeping Day today.

There are solar terms to write solar terms

For example: vernal equinox; Summer solstice or something

That is, for example, today's 3- 1 Lunar New Year Day.

Even in the first half of the Sino-Japanese War in Ji Chun.

Month writing:

First of all:

Spring is January, February and March, Meng Chun is January, spring is February, Ji Chun is March, summer is April, May and June, Xia Meng is April, summer is May, autumn is July, August and September, autumn is August, autumn is September, winter is October, November and December, and winter is November and December.

Secondly,

Between China and Japan

Bin silver moon

Ding maoyue

Wu chenyue

Ji siyue

……………

This is more complicated.

I suggest you use one.