He led a squad and Platoon Leader Cao to the road south of the bridge, disguised as South Korean troops, and hijacked the enemy's ammunition transport vehicle. Liang Chen planned to drive on the bridge alone to detonate the bomb, and then looked for an opportunity to jump off the bridge to escape, but was attackedLi Wanfu objected. Li Wanfu believed that it was because his reconnaissance was not careful enough, which led to the failure of the bridge bombing and the sacrifice of his comrades in the engineer platoon. Feeling regret and guilt, he insisted on bombing the bridge instead of Liang Chen.Li Wanfu drove alone to the bridge and pulled the fuse. When he was about to jump into the river and escape, he found that the car was not in the best position. In order to ensure the success of the mission, he gave up escaping and returned to the car. These suspicious actions causedAttracting the attention of the patrolling soldiers, the South Korean army began to shoot at the truck. Li Wanfu desperately drove the truck to just above the bridge pier despite the hail of bullets.He tried to jump into the river again, but was unable to move due to being shot in the leg. The huge explosive force of the ammunition truck destroyed the Yujiang Bridge, and Li Wanfu died heroically.