Really only just off the beaten track, the Yuquan Spring is another subliminal advertisment for how incredibly lucky the Mongolians were for the Chinese to head up north.
In 1679, Emperor Kangxi came to these lands to put down the Gerdan rebellion. When Kangxi arrived at the Dazhao Lamasery, his horse scraped its hoof on the ground and water gushed out from nine springs. So goes the legend. The springs lie in the plaza outside the entrance to the lamasery, cunningly hidden behind the buses and cars.
The springs became known, somewhat predictably, as the Number One Spring Of The Nine Frontier Garrisons.
There were many celebrated inns and restaurants around the place (a Chinese version of "thirst after righteousness", I suppose). It is said that Emperor Kangxi decided, one night, to go down to the area dressed as a commoner and have a few drinks at the Yueminglow Restaurant in the plaza. Unfortunately he forgot to bring any money and when the bill came, it added up to 8.3 liang of silver (maybe more than just a few drinks then). The restaurant owner was somewhat unhappy with the man who had no money, and was getting his bouncers ready to beat him up. In the nick of time, a certain Liu San, who was a barman at the restaurant, leapt to the defence of the hapless king-in-disguise. He offered his anual salary as a 'ransom' for the man's safety. His annual salary, by a Disneyesque quirk of fate, came to 8.3 liang of silver. With one bound Emperor Kangxi was free.
Subsequently, the emperor called Liu San to Beijing where he conferred the rank of fourth class official on him, without requiring him to do any work to earn it.
These practices - of binge drinking and being paid to do nothing - continue to this day. The chances of a barman paying a year's salary to stop you being beaten up are rather slim.
This episode is spectacularly recorded in the Yueminglow Painting in the Dazhao Lamasery.