Why do some Hui people in China wear white hats and some black hats?

Young Hui people wear white hats, and some old people wear black hats.

The following is the relevant introduction of the Hui nationality:

The pattern of "large scattered and small living" of Hui nationality is concentrated in the distribution of Hui autonomous regions, autonomous prefectures, autonomous counties and ethnic townships. There are 14 Hui autonomous regions, of which 1 autonomous region, 2 autonomous prefectures and1Hui autonomous county (including trade unions); Among them, there are autonomous regions 1, 2 autonomous prefectures and 6 autonomous counties (Hui autonomous counties 1 1, including the Federation).

There are 0/40 Hui townships in China, only 37 in the northwest, 28 in the southwest, 27 in the north, 2 in the east, 5 in the northeast and 3/kloc-0 in the south-central.

It is worth noting that in the cities with a population of 183 million or more, the main ethnic minorities in about 97 cities are Hui, especially in the eastern and central cities, and the proportion of Hui is higher.

Refer to Baidu Encyclopedia-Hui Nationality for the above information.