Search the dictionary A Chinese word or character, or English Draw a character Search 3 entries. xiàhánwǔ 下寒武 lower Cambrian (geological period approx 530 million years ago) xiàhánwǔtǒng 下寒武统 lower Cambrian series (geological strata from approx 530 million years ago) xiàhánwǔtǒng 下寒武統 lower Cambrian series (geological strata from approx 530 million years ago)