Changtse (Tibetan: "north peak") is a mountain situated between the Main Rongbuk and East Rongbuk Glaciers in Tibet, China, immediately north of Mount Everest.
 It is connected to Mount Everest via the North Col.
Tongshanjiabu () is a mountain in the Himalayas.
 At 7,207 m tall, Tongshanjiabu is the 103rd tallest mountain in the world.
 It sits in the disputed border territory between Bhutan and China.
 Tongshanjiabu has never been officially climbed.

Question: what does Tongshanjiabu and Changtse have in common?
Answer: mountain