In response to your question, I personally think it should mean: In the Ming Dynasty, when Yuan Shundi was evacuated from Dadu to Monan of Li Dan Khan, the Mongols in Mobei were also called Tatars.

Due to limited personal knowledge, I don't know the detailed genetic situation. In Ming Taizu, information about Tatars and Waci people is scattered in the history of Ming Taizu's founding father.

Vala:

Mongolian Timur (Ming Taizu period)

1, Mahamu

In the early Ming Dynasty, the leader of the Mongolian Wara Department devoted himself to the hegemony of Mongolian grassland in eastern Mongolia. In eastern Mongolia, Khan Ben Li Ya and Grand Priest Arutai fought against the Ming Dynasty, while Mahamu and his brothers Taiping and Tubo Luo surrendered to the Ming Dynasty. Ming Chengzu named Mahamu King Shunning, Taiping King De and Boluo King Anle. )

Step 2 get rid of happiness

(Killed East Mongolia Arutai, and killed the sage Wang Taiping and the head of the king of happiness, Boluo, to unify the four Walla departments first. 1438, Artest Khan, who founded Arutai, was attacked and killed. He became a great Khan and became a prime minister, further controlling East Mongolia.)

3, also the first.

(The son of Tuohuan, Vara was very powerful during his reign, and the change of the civil fort took place during the British Emperor's reign. After his death, the Walla tribe dispersed and gradually declined, and the internal situation was little known. )

After that, there was a short revival, and then the main activities were in Central Asia and Eastern Europe, and the relevant records gradually disappeared.

Republic of Tatarstan

1, Ghost Power Red

In the fourth year of his reign (1402), he killed Kun of the Yuan Dynasty and was honored as Khan (or Khan) by Arutai and others. Abolish the title of the Yuan Dynasty and call it Tatar. 1408 killed

2. Dayan Khan

His real name is Batumonko (translated as a bald monk), and he is the only one in A Jin family, the 15th grandson of Genghis Khan. 1479 (the 15th year of Chenghua), known as the "Lord of Zhongxing" in Mongolian history.

The above is my personal understanding, I hope I can help you.