Why did Pang Tong go to die knowing that there was an ambush on Phoenix Slope?

Pang Tong's death was an accident, neither knowing that there was an ambush, nor striving for success with Zhuge Liang, nor giving Liu Beiyou an excuse to attack Liu Zhang, but an accident. Pang Tong died while attacking Luocheng (now Guanghan, Sichuan) and was killed by Liu Ya. If anyone is responsible for Pang Tong's death, it is Liu Bei.

When Pang Tong entered Sichuan with Liu Bei, Liu Bei wanted to meet Liu Zhang in Fucheng (now Mianyang, Sichuan). Pang Tong suggested to Liu Bei to take Liu Zhang when meeting Liu Zhang, so that Yizhou could win without fighting. Liu Bei refused, on the grounds that when he first came to Yizhou, the heart of benevolence and righteousness had not yet been established, and it would be immoral for the world to rashly take away Liu Zhang.

Obviously, Pang Tong and Liu Bei think differently, and Pang Tong thinks strategically. Taking advantage of the meeting to win Liu Zhang, he lost the least and took the shortest time. Liu Bei, on the other hand, considered political issues. If we win Liu Zhang in this way, we will lose our morality to the world, and then I, Liu Bei, will not be able to gain a foothold in the world. You can say Liu Bei is benevolent and hypocritical. Obviously, Liu Bei has his own plan, and it is this plan that will kill Pang Tong in the battle against Luocheng. Would Pang Tong have died if it had not been for Liu Bei's choice?

After the meeting, Liu Zhang returned to Chengdu, and Liu Bei came to Jiamengguan. At this time, Pang proposed to Liu Bei the best, middle and worst strategies for attacking Liu Zhang: the best strategy was to select elite soldiers and sneak attack on Chengdu day and night. The middle strategy is: first, get rid of Baishui Guanshou generals Yang Huai and Gao Pei by stratagem, and then lead the army to attack Chengdu aboveboard. The best way is to return to Bai Di directly, and then attack Liu Zhang together with Jingzhou Army.

This time, Liu Bei gave up the best policy and chose Zhongce, and attacked Liu Zhang in Chengdu aboveboard step by step. It was Liu Bei's choice that killed Pang Tong in Los Angeles. Liu Bei has been beating Liu Zhang for almost three years. In Chengdu, Liu Zhang's subordinate Zhang Ren and Liu Zhang's son Liu Xunshou arrived in Chengdu after winning Los Angeles. Liu Bei led an army to attack Luocheng, Zhang Ren was killed by Liu Beijun, and Liu Xun held on to Luocheng. When Pang Tong led the army to attack Luocheng, he was hit by a stream vector and died.

Pang Tong died in Luocheng, not in Luofengpo. After Pang Tong's death, Liu Bei personally chose a treasure trove of geomantic omen for Pang Tong as a cemetery. This place is called Luofengpo, where Pang Tong was buried.