Why did Li Bai write To Wang Lun?

Li Bai likes to write poems all his life, and he also likes to drink and travel around famous mountains and rivers. Wang Lun appreciates his talent very much and wants to make friends with him. So he wrote a letter from the trustee to Li Bai, which said, "Sir, do you like sightseeing? There are ten miles of peach blossoms here; Do you like drinking? There are Wanjia Hotels here. " Li Bai looked at it, ah! I must visit such a nice place. But when he got there, he didn't see Shili Peach Blossom or Wanjia Hotel, and Li Bai was puzzled. Wang Lun explained, "Peach blossoms are ten miles away, and there is a peach blossom ferry ten miles away. A surname of Wan opened a Wanjia Hotel, not a Wanjia Hotel. " Li Bai suddenly realized that instead of being angry, he was amused by Wang Lun's humor, and they hit it off. In the next few days, Wang Lun treated Li Bai warmly every day and took him around the local famous mountains, rivers and scenic spots. They drank wine and wrote poems together, shared similar interests, and formed a profound friendship in just a few days. When he left, Wang Lun sang a song to see him off. Deeply moved by his sincerity, Li Bai improvised a poem to Wang Lun.