Hu Yan 胡衍, a minister of Wei 衛, traveled to the court of the king of Qin 秦 after his armies had conquered a part of Wei. This occupation, Hu Yan said to King Wu of Qin 秦武王 (r. 310-307), would only profit the state of Wei 魏 but had no advantage for Qin. Counsellor Chulizi 樗里子 thereupon called off the troops of Qin.