Brandon Yu April 19, 2021 Tony Chung (left) as Dennis Song, Jon Prasida as Ryan Shen, Tzi Ma as Jin Shen, Olivia Liang as Nicky Shen and Shannon Dang as Althea Shen in the CW reboot of “Kung Fu.” Photo: Katie Yu , CW Like everyone else, those behind the new CW series “Kung Fu” distinctly remember the wild sequence of events in March 2020, when the pandemic suddenly halted everything. It was just four days into shooting the show’s pilot, a pause the cast and crew expected to last two weeks but would ultimately remain until October, when production resumed in Vancouver, British Columbia.