The God Of Climbing Mountains, Yu-Er, is only one foot tall with completely human features. I think Yu-er might be mountain dwarf.
Duke Huan of Qi (685–643 b.c.e.) was on a military campaign northwards against the state of Guzhu. A little more than three miles from the Bei-er River, he stopped short and stared transfixed. He aimed his bow but drew back and dared not shoot, saying to his attendants, “Do you see that person ahead?” The attendants answered, “We see no one.”
The Duke said, “This campaign is destined to fail for I am much confused! I have just seen a person only a foot tall with completely human features. He wore a hat and his right arm was raised as he raced on a horse. This campaign is destined to fail for I am much confused! How could there be a person like this?” Guan Zhong (c. 730–645 b.c.e.) replied, “I have heard that there is a God Of Climbing Mountains, Yu-Er, who is only one foot tall with completely human features. When a hegemon arises, the God Of Climbing Mountains appears. He races on a horse to indicate the way. When he raises his arm, it means that there is a river ahead. The right arm means to turn right to cross the river.”
When they arrived at the Bei-er River, there was someone there to aid them in crossing who said, “If you cross to the left, the water’s depth will reach your hats but if you cross to the right, it is only as deep as your thighs. You can cross successfully to the right.” Duke Huan stood and bowed before Guan Zhong on his horse and said, “I am at fault for not realizing your sageliness.” Guan Zhong replied, “I have heard that a sage can know things before they appear but just now, I was only able to know this after he appeared. Your humble servant is no sage, merely someone who is able to understand the teachings of others.”