A perfect jumping-on point for new readers is "Shang-Chi" #1-5 (2020) by Gene Luen Yang, Dike Ruan, and Philip Tan. This miniseries offers a charming, multifaceted introduction to Shang-Chi, now living in San Francisco and using his formidable martial arts skills at Grandma Wang's bakery. (Neither his father's cult nor his time with the Avengers has quite prepared him for a regular job.) 

Shang-Chi's problems with his extended family, however, are just beginning, as his long-lost sister Shi-Hua reappears to challenge him for the right to lead Zheng Zu's Five Weapons Society. Now known as Sister Hammer, Shi-Hua resurrects one of her father's dark experiments, unleashing an army of jiangshi (vampiric zombies) on an unsuspecting world. Also introducing Shang-Chi's half-siblings Takeshi and Esme — the "Brother Sabre" and "Sister Dagger" to Shang-Chi's "Brother Hand" — this series is a thrilling expansion of Shang-Chi's world and ushers in a bold new status quo.