How far is Chongqing Wanzhou from Spain?

Wanzhou, Chongqing is located in the southwest of China, northeast of Chongqing, east of Asia, and Spain at the junction of Western Europe, Atlantic Ocean and Mediterranean Sea. Chongqing has no direct flights to Spain, so it needs to transfer at Hong Kong, Beijing or Shanghai, Dubai and Frankfurt, and then transfer to Madrid or Barcelona in Spain. If the distance is calculated, it should be more than 10000 km.