震旦纪 zhèn dàn jì

DEFINITIONS

  1. Sinian (c. 800-542 million years ago), late phase of pre-Cambrian geological era

CHARACTERS

震 zhèn
HSK 5
shake, quake, tremor; excite
旦 dàn
HSK 5
dawn; morning; day
纪 jì
HSK 4
record, annal, historical account