颛 ㄓㄨㄢ zhuān 顼 ㄒㄩ xū 顓 ㄓㄨㄢ zhuān 頊 ㄒㄩ xū Zhuan Xu, one of Five legendary Emperors 五帝[wu3 di4], grandson of Yellow Emperor 黃帝|黄帝[Huang2 di4], trad. reigned 2513-2435 BC