Which one has something to do with the hard life of the courier?

Related to the hard life of the courier is riding a princess of mortals and laughing. No one knows it's litchi. Depends on how fast the litchi delivery man rides. As we all know, there were many post stations in ancient times, where people who sent things asked for a rest. In the Tang Dynasty, a post station was 30 miles long. Under normal circumstances, it ran four post stations a day, which was 120 mile road. If it's urgent, it's 6 stops a day, which is 180 Li. If it is express delivery, it is equivalent to the express delivery we are using now. It's 10 posts a day, which means running 300 miles a day. This is not the fastest and fastest way to send forgiveness, because forgiveness is to save people. When it comes to forgiveness, people can only be saved by shouting swords. The rate of forgiveness is 16 days, which is 500 miles a day. Tang Xuanzong loved Yang Guifei very much, and it was certainly the quickest way to send his favorite litchi. Hard work all the way, I don't know how many horses to kill, which attracted the beautiful woman to smile.