Inside a brightly painted classroom, a circle of kindergarten kids sits facing their teaching assistant, a Filipina. "So what kind of present do you want from Santa?" she asks in English. "Do you want a toy? Who likes Barbie?" Some of the girls stick up their hands.
"We also have a Barbie for boys. What's he called?" the teacher continues. Several voices overlap, all speaking in English. "Ken!" "I want boy Barbie!" "I too want, miss!" After the hubbub subsides, the day's lesson begins: The sound made by the letters Q and U.
Next door, another group of preschoolers is playing a game. Their profile is identical - under 5, over 90 percent Thai. But the teacher is Taiwanese, the language being spoken is Mandarin, and the classroom décor is Chinese.
After recess, the children will swap places - and switch languages. When school is over, pupils revert to speaking their mother tongue. The next day, it's back to the immersion classes in English and Chinese.
Welcome to the cutting edge of Thailand's flirtation with Chinese, an ancient language increasingly seen as the new dialect of diplomacy and trade in East Asia. In the last few decades, China's economic rise has rippled across the globe, jolting policymakers and dazzling investors.
In its wake, Mandarin is also making gains.
Just as the US leveraged its superpower status to promote its language and culture, Beijing is busy exporting its tongue. It may lag behind English as a global language, but there's no doubting its rising appeal, especially in Asia.
Thailand hasn't turned its back on English: It's still compulsory in public schools, and likely to remain so. But starting from this year, thousands of schools will introduce Chinese as a foreign language, with a target of enrolling 30 percent of all high school students in programs within five years.
"There's been a lot of interest among parents as well as students to learn the Chinese language," says Khunying Kasama Varavarn, permanent secretary at the Ministry of Education. "We hope to establish at least one secondary school offering Chinese in every province."