Why do many Hong Kong Chinese look different from the Han Chinese in mainland China?

For example John Lone, Sean Li, Patrick Chan, Chen Yunshang, Osman Hung, Louis Cheung, Zhang Huizhang, Sun Yat Sen, Pakho Chan, Sammy Sum, Wu Yanshu, Mui Yee, Lee Tit, Frankie Lam, Frankie Chan, Shih Kien, Walter Tso, Karl Maka, Lu Wencheng, Cheng Gwan-min, Gilbert Yeung, Fong Foo Sec, Chen Gongbo, Wong fei hung, Nick Cheung, Eddie Chen, Lun Chia, Howqua, Kuo-Chen Chou, Kei Perenna Hoi Ting, Xu Yingkui, Monica Chan, Carina Lau, Margie Tsang, James Hong, Elanne Kong, Robin Shou, Vivenne Tam, Martin Yan, Chan Wai-man, Li Kai-shing, Ip Man, Nora Miao, Huang pa-ching, Carman Lee, Kent Tong and Barbara Yung, Cherie Chung, Carol Cheng (technically Sichuanese but still close genetically), George Lam, Mike Tsang, Angie Chiu, Sam Nam Hung, Linda Lin Dai, Grace Chan (mixed w Malay tbf), Katy Kung, Newton Lai, Aaron Chow, Jason Lam Yeun Ying, Michael Dinga, Jaime Chik, Lai man wai, Danny Chen, David Henry Hwang, William Yukon Chang, Benny Lai, Cheung Kwok keung, William ah ket, Jack Wong Sue etc

Probably because of the heavy Kradai ancestry they have. Couple this with admixture from Han migrants from the Central Plains and relative isolation and you get a huge number of unique phenotypes, which include phenotypes that look pseudo Caucasian/Eurasian like Jomon influenced Japanese. But I wouldn’t say just Hong Kong Chinese but rather, Cantonese people overall, who mostly live in Guangzhou, Hong Kong and Macau and speak the Cantonese language.

Will also throw in this chef I found.

Ive been pretending to be okay and acting as normal as possible, but Im actually completely heartbroken after a recent breakup. Its painful and really affecting me, to the point where I cant concentrate at work, Ive lost my appetite, I cant sleep, and It feels as if my whole world has been turned upside down. I loved him so much. He said so many cruel things to me and it made me realize he must not have loved me the way I loved him, or he wouldnt have said such horrible things. How do I handle the heartbreak and why cant I accept that he didnt love me and just forget about him?