That's probably a translation of the comic that was going in in Hong Kong (I think they said). When the hoax got out of control, there was a company doing a Street Fighter comic at the time, and they scrambled to fit "Sheng Long" into the story.

And more recently, apparently there was a Street Fighter Zero 3 comic which had a Sheng Long as Ryu's father or something? But from what I'm reading on that, I highly doubt it's official. It totally screws up the Street Fighter mythos (way more than Sheng Long would have)

Basic Information

- ChunLi is the daughter of Lord Vega. Gen is her sensei and sort of Lord Vega's trusted servant
- Ryu is Gouken's eldest disciple. Son of Sheng Long (Chi Sheng Long /Red Rising Dragon even though I call him Shoryu) Ryu's name means Chi Long / Red Dragon because of that headband which comic wise was given by his father
And Sakura is Ryu's long lost twin sister ( ignore age difference) adopted by Guy's master
And I don't think "Sheng Long" is necissarily a translation issue in that quote, considering...

- Sheng Long's backstory. He and Guy's master (Zeku ) are childhood friends. And were seperated when Goutetsu picked him as a student (already has Gouken, Gouki and one other guy name Hoken( Hao Quan but call him Hoken for story sake okay )) While Zeku went and study Bushinryu (Guy's style)