Jiàn Wén
Jianwen Emperor, reign name of second Ming Emperor Zhu Yunwen 朱允炆[Zhu1 Yun3 wen2] (1377-1402), reigned 1398-1402
jiàn wén
what one has seen and heard
knowledge
one's experience
Zhū Yǔn wén
Zhu Yuanwen, personal name of second Ming Emperor Jianwen 建文[Jian4 Wen2]