This is your WEF home for all things SIPG. This week, Jeff Beresford-Howe looks at the end of an era in Shanghai. It’s been a typical off-season in Chinese football: teams dissolved, ownership jailed, all manner of chicanery when it comes to player moves, and of course arbitrary and unexplained rule changes. But for the most stable club in the CSL, the champions SIPG, a thunderbolt struck on Sunday. Wu Lei, who’s been on the pitch for the Red Eagles…