The last day in Doha Today is the last day that I remain in Doha. In the morning I came to Texas A & M University at Qatar. Then I quickly finished the paper work. In the noon, I came out for the lunch with Ling. One friend paid the lunch. Before lunch, we have gone to the commercial bank to change the check into Qatar money, then we have gone to another place to change the money in USD. After the lunch, we came back to the lab.