After Shensheng's suicide Li Ji falsely accused Chong'er and Yiwu of revolting,[2] and the two princes escaped to Pu and Erqu, respectively. In 655 BC, the 22nd year of his reign, Duke Xian sent troops to Pu and Erqu to capture Chong'er and Yiwu. Chong'er and some of his loyal subjects escaped to the Di tribe, where his mother came from.