震旦纪

震旦纪	zhèn dàn jì	Sinian (c. 800-542 million years ago), late phase of pre-Cambrian geological era
震	zhèn	to shake / to vibrate / to jolt / to quake / excited / shocked / one of the Eight Trigrams 八卦, symbolizing thunder / ☳
震旦	Zhèn dàn	ancient Indian name for China
旦	dàn	(literary) dawn; daybreak / dan, female role in Chinese opera (traditionally played by specialized male actors)
纪	Jǐ	surname Ji / also pr. [Ji4]
纪	jì	order / discipline / age / era / period / to chronicle