浪子钢 your translation is great!
Today I meet the professor I've mentioned.She is called Prof. Phanee, head of the department of linguistics in Chulalogkorn University, the most promenient university in Thai.She is so nice that she brought me to her office and showed many interesting books to me! After a long talk she invited me to have lunch together. To my suprised, she is the student of Li Fang-kwei!!!!!!! No wonder she is that professional.
She knows a lot about Debao and Jingxi. In fact one of her student is a Southern Zhuang.
Afternoon I spent several hours in the National Museum, haha, at the beginning of the exhibition it says that Tai people distributes from China to India, and Thailand is the origin of Thai people, then it shows a picture of some Han people in Guizhou (the group who still wear the dressing of Ming Dynasty), and says they are Bouyei people!! Then, there is a map showing the geographical distribution of Tai people, and it labels the Pearl River as Yangzi River!! OMG!!!!!!
I'll back tomolo, so thanks god I can type back Chinese again. See you all!