Hui =/= Uighur

Hui are really just Han people who embraced Islam.
Uighurs are totally different - they are a mix of Asians and Caucasians.

Here is one Hui people - actress Liu Shishi.
I bet many would think she is Han, if I don't mention it.

Their DNA maybe 1%-2% Arab.

Just like Tony Fernandes, having a European surname, but the look is completely Indian.

The Hui were referred to as Hanhui[b] during the Qing dynasty to be distinguished from the Turkic Muslims, which were referred to as Chanhui.[4][c] The Republic of China government also recognised the Hui as a branch of the Han Chinese rather than a separate ethnic group. In the National Assembly of the Republic of China, the Hui were referred to as Nationals in China proper with special convention.[5] The Hui were referred to as Muslim Han people[d] by Bai Chongxi, the Minister of National Defense of the Republic of China at the time and the founder of the Chinese Muslim Association.[6] Some scholars refer to this group as Han Chinese Muslims,[7][e] Han Muslims,[8][f] or Chinese Muslims,[9][g] while others call them Chinese-speaking Muslims or Sino-Muslims.[10]

The Hui were officially recognised as an ethnic group by the People's Republic of China government in 1954.[11] The government defines the Hui people to include all historically Muslim communities not included in China's other ethnic groups; they are therefore distinct from other Muslim groups such as the Uyghurs.[12]
https://en.wikipedia.org/wiki/Hui_people


^ Hui were considered Han people who professed the faith of Islam until 1954.
They may have some Arab DNA, but mostly they look just like Han people.