I came to Ledao again after many years and it changed a lot. The dolphin show removed some traditional circus parts, and joined the environmental protection appeal and the display of natural behavior of animals, which made great progress. The state of the sea lion seal is also not bad. There are several things that can be improved: the breeding site of beluga whale porpoise seals is simpler, and native species such as porpoise seals can actually be better promoted and displayed. Animals can be disinfected when they are intimate, and it is emphasized that people and animals should not be in contact in the wild. The large area of water space in the Arctic wolf cage is useless, and the Arctic wolf has developed stereotypes in the small land space, hoping to solve it as soon as possible.