Beijing and neighboring Hebei province's Zhangjiakou have continued fighting to co-host the 2022 Winter Olympic Games since the cities launched their joint bid on Nov 3.

But they face stiff competition from several challengers - Norway's Oslo, Ukraine's Lviv, Sweden's Stockholm, Kazakhstan's Almaty and a joint effort from Poland and Slovakia.

"We declared our intention to co-host the Winter Games with Beijing in 2003 and have never given up on the idea," Zhangjiakou's bidding office director Zhang Chunsheng said.