候風地動儀 hòu fēng dì dòng yí

DEFINITIONS

  1. the world's first seismograph invented by Zhang Heng 张衡 in 132

CHARACTERS

候 hòu
HSK 1
wait; expect; visit; greet
風 fēng wind; air; manners, atmosphere
地 dì
HSK 3
earth; soil, ground; region
動 dòng move, happen; movement, action
儀 yí ceremony, rites gifts; admire