Other than the 4 great inventions of China (compass, gunpowder, paper, woodblock printing), toilet paper is also a popular invention of China, and here are more:
Umbrella: 鲁班 507-444 BC. Also invented 斗栱，锯。
Paper money (交子): Song Dynasty, 1023 AD
Toothbrush: Tang Dynasty
Hand Grenades: 震天雷 Song & Jin Dynasty
Mechanical clock: 蘇颂 1020-1101 AD, invented water clock, 天梯, from 一行。