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Photo taken on July 6, 2019 shows a Lanna script teaching material brought by Jampong Tangtrakul, a Lanna script teacher, to the Lanna Expo 2019 in Chiang mai, Thailand. (Xinhua/Yang Zhou)
Photo taken on July 6, 2019 shows a Lanna script teaching material brought by Jampong Tangtrakul, a Lanna script teacher, to the Lanna Expo 2019 in Chiang mai, Thailand. (Xinhua/Yang Zhou)