The Lai-Ching Hall was used to host honorable guests in the old times and was also the place to see the flowers planted between the Rainbow-moon Arched Bridge and the Ding-Jing Hall. Going up to the second floor of the building to look far away, one can see the green scenery of Mt. Datun and Guanyin. What comes to the eyes is the vast expense of green scenery. Thus, it is named “Lai-Ching” in Mandarin, which means the arrival of the green. In addition, it is the most luxurious building in the garden.

On the wall along the corridors, there were once calligraphies by Kai Zhou and bamboo paintings by Guan-Chiao Hsieh. Unfortunately, they have been peeled and become incomplete. After restoration, the only complete one is what Kai Zhou wrote "Chu-tzu-tu-shu-le Shih" in the 16th year of the Tao-Kuang period (1836). There are gardens on the two sides of the building, separated by the flower wall, on which see-through windows were carved in graceful styles with profound meanings. In front of Lai-Ching Hall stands a performing stage, where the performers were invited to entertain the guests in the old times.