Timepieces, bridges, saddles, what other inventions did ancient China have?

It goes without saying that the four great inventions

In addition, there are:

Timer, bridge, and saddle.

Lin-solar calendar

The world's oldest star catalog - Shih's star catalog

An instrument that demonstrates the apparent motion of celestial bodies - the armillary sphere

my country's oldest timekeeping instrument - the pot leak

Zhang Heng's seismograph

Calendar revolution - Shen Kuo's "Twelve Qi Calendar"

Science Yuan Qi Pa - an astronomical instrument invented and developed by Guo Shoujing

Zu Chongzhi and pi

Abacus

Magnetic declination and magnetic inclination

Measurement Tools - Vernier caliper

Projection slide - revolving lantern

Bamboo slips and wooden slips

Silk books and silk paintings

Silk tissue paper - He Ti

The world's earliest plant fiber paper

The equatorial instrument of Luo Xiahong in the Han Dynasty

Su Song - an astronomer in the Song Dynasty of China. Cooperating with Han Gonglian, he made a planetarium and a water-borne telescope, which were the first planetarium in ancient China.

Ma Jun, a native of Wei, invented the water keel cart

Ding Xu (Han Dynasty) invented the incense burner, permanent lamp, and rotating fan

Du Shi pioneered the water drainage of hydraulic blowing equipment. That is, water power is used to push the fan to blow air. It was the world's earliest water-powered blower, 1,100 years earlier than in Europe.