There's a sale now for J out of PEK and PVG to many destinations with limited seats and dates, offer good until October 31st, first segment flown by March 31st, all segments done within 4 months.
See details here
TK: PEK to Africa/Americas in Business ~$1,800
For the first time I'm seeing under $2000 USD between Asia and Canada, those low J fares makes my E+ upgrade vouchers almost worthless as Y fares are like $1500 USD.
Another benefit of TK, you can "reserve and pay later", I just held a couple tickets and I can pay by October 31st. I'd be curious I could still get the sub $2000 J fares if I decide to pay and ticket.