Why was Sun Chengzong of Ming Dynasty tied into a ponytail and dragged to death?

Sun Chengzong was an outstanding strategist in the late Ming Dynasty. Without Sun Chengzong's efforts in the late Ming Dynasty, the demise of the Ming Dynasty might have been earlier. At that time, even though Sun Chengzong tried several times to save the decline of the Ming Dynasty, the wheel of history was rolling forward, and it was not enough to change the situation at that time only by Sun Chengzong or Yuan Chenghuan, so it was only a matter of time before the Qing Dynasty replaced the Qing Dynasty.

However, despite this, in the case that Sun Chengzong refused to call Sun Chengzong several times, the Qing soldiers attacked Gaoyang City, and Sun Chengzong still took his family to fight against the enemy. But this force can't stop the fighters of the Qing army. After the fall of Levin City, Sun Chengzong was arrested by the Qing army. How could Dourgen let this famous Ming Dynasty go? So he ordered people to tie him in a ponytail and drag 76-year-old Sun Chengzong to death.

According to historical records, the Ming Dynasty general was finally buried two miles northwest of Gaoyang County. Sun Chengzong's tomb was destroyed long ago because the Qing soldiers entered the customs. The tombstone that can be seen now was set by Sun Chengzong's first12nd generation grandson. It's really embarrassing for a patriotic general to end up with only one tombstone in his grave.