The riddle of the 1980s has not been guessed yet!

It is also a daily necessities.

Last name is Nong-there is an old farmer in your family.

There are solar terms-proficient in solar terms.

Please go home during the Spring Festival-gongs and drums are coming.

Send it away at the end of the year-firecrackers will explode when you leave.

Step 2: abacus

It is also a daily necessities.

Farmer's friend-your family invited an old farmer.

Careful calculation-proficient in solar terms and soil moisture

Time-use sound-when you come, gongs and drums are loud.

The sound of closing time-firecrackers were ringing when you left.

3. "Weather forecast" program of radio station

Radio and broadcasting are also daily necessities.

Farmer's friend-your family invited an old farmer.

Weather forecast program-proficient in solar terms and soil moisture

The sound when it opens-when it comes, the gongs and drums are loud.

Door closing-firecrackers were ringing when you left.