Alan thinks all Chinese people are bad drivers.
How to complete the following sentence about Alan.
Alan ------ to/toward/about Chinese people.
Is stereotypical, has stereotype, look stereotypically, or ?
Also about the preposition: to, toward, about, or ... ?
As far as I could research, none of the above suggestion are highly popular on the web. "to have stereotypical attitude" are used too, but I don't know if it is good. I want to know the most idiomatic way to say such a sentence using "stereotype" or related words.