Complex sentence: The three most prevalent religions in Ho Chi Minh City are Mahayana Buddhism with Taoism and Confucianism (via ancestor worship), which are often celebrated together in the same temple, the Vietnamese and Han Chinese are strongly influenced by these traditional religious practices.
Split into simpler sentences: The three most prevalent religions in Ho Chi Minh City are Mahayana Buddhism with Taoism and Confucianism (via ancestor worship), which are often celebrated together in the same temple. Most Vietnamese and Han Chinese are strongly influenced by these traditional religious practices.