First of all, when our country fought back against Vietnam in self-defense, Wu Yuanjia was marginalized. Wu Yuanjia has been a staunch pro-China faction all his life. The war against China was launched by the Soviet agent in Vietnam headed by Dun Wu Yuanjia. There was a certain degree of resistance, but it could not play a substantive role because of its overhead rights. Secondly, in the self-defense counterattack against Vietnam, because our army did not get rid of the influence of WG, political officers interfered too much in military operations, the troops were poorly trained and the logistics support was poor, and there were some painful lessons. But on the whole, the battle is good, and the casualty ratio and the quick decision are all ok. Secondly, our army is not an ace force, and the main force of Vietnam is also invading Cambodia. Neither side is perfect. Finally, for Lao Xu and Lao Yang ... Lao Xu made many mistakes because of greed, and Lao Yang played well.