What does the old man mean by "killing Tartars on August 15th"?

Killing Tartars on August 15th is a short story widely circulated in China, also known as killing Tartars on the full moon. This story is about the news that Liu Bowen, the army of Zhu Yuanzhang, killed the Tartars to farmers and other rebels through moon cakes at the end of Yuan Dynasty.

Tatars are also Tatars. The Tatars in the family are all little people. He not only confiscated the weapons, but also kept the kitchen knife. Take it away and return it after use. Whether it's a ladies' room or a new house, he can go in and out at will. Whoever wants to sleep with him will sleep with him. He is stubborn. If he uses the money to buy a threshold, he will behave better. There is no fixed price for the threshold. Like he said, you can't talk back. In this way, the rich can afford it and the poor can make things difficult. The threshold will bankrupt you. I can't afford it. My wife and daughter had to let go.

Because Mongolians don't like pancakes and don't know much Chinese, this method avoided a lot of trouble and finally successfully launched an uprising. In order to commemorate this festival, every family has the custom of eating moon cakes on the reunion night of Mid-Autumn Festival.

The Mid-Autumn Festival was originally to commemorate the uprising that overthrew the Yuan Dynasty. At the end of the Yuan Dynasty, the people could not stand the government's rule. Mid-Autumn Festival, "Kill Tatar, Kill Yuan Dynasty; On August 15, every family began to have sex, and the fine print was hidden in the round cake and passed on to each other. /kloc-On the reunion night in August of 0/5, every family began to overthrow the rule of the Yuan Dynasty.

Later, every Mid-Autumn Festival, we would eat moon cakes to commemorate this historic victory. The Dalai Lama invaded on behalf of foreign enemies, and August 15 was the day of reunion. Killing him at this time represents his punishment, so there is a saying among the people that the Dalai Lama was killed on August 15.