We went in late April. Before we went, we caught up with several rains. On Cherry Blossom Avenue, we could only see a few scattered cherry blossoms. Unfortunately, the cloves were blooming just right on the roadside. If you are ready for a one-day tour, you can take Line 9 and get off at Exit 1 and Exit 6 of the Parliament Hall Station, first visit the Parliament Hall, then walk to the KBS Building, then walk in Ruyi Island Park, or rent bicycles or roller skates to gallop in the park, and walk in the Hanjiang Park of Ruyi Island on the northeastern side of the island (there are Hanjiang cruise boats, tickets are about 12,000 won, and the routes are different. Cherry Blossom Avenue is said to be 5.7 kilometers long. It should be from Ruyi West Road to Ruyi East Road. You can feel it by walking a short distance eastward. Walking to 63 Mansion, the downstairs Glea duty-free shop can shop. Skyart is on the 60th floor. You can see the night scene of Seoul City. We went there and there was a heavy fog in the afternoon. When we went up, we could see nothing. Adult tickets are 13,000 won, Hai World seems to have not opened for renovation; in the evening, you can go to Luliangjin Fisheries Wholesale Market on the east side of Building 63, beside which is Luliangjin Station on Map Line 1 and Line 9. It is also convenient to return to the hotel.