I bought a ticket for 15:40, and it rained heavily in Tokyo on September 5th. I had no chance of getting a ticket, so I called Ctrip customer service to cancel it. However, since it was a same-day ticket, I couldn't cancel it proactively. Unexpectedly, the sky cleared up at 6pm, and I was still in Sky. I went straight to the 14th floor and communicated with the local Japanese staff. This time they finally came to my senses and didn't let me return disappointed. I immediately contacted Ctrip and refused to refund my money. I think I was really lucky that day.