In a dilapidated alley in the old part of the city, there is a small, dilapidated door. It was made of old poplar wood, and the door was cracked and cracked. It is very rare to find something with such a simple style in such a prosperous city. On the middle and upper part of the door, there are a few mottled characters vaguely carved with something sharp. After careful analysis, it was found that they were the four characters "Lianxin Teahouse" in seal script. This door just stood alone in this dark alley, silently savoring the passage of time.