The use of Taiwanese in this Ministry of Foreign Affairs post struck me as interesting. As the term 「換帖」 exists in Mandarin too, they used romanized script to ensure that it is read in Taiwanese. I guess this makes it harder for people in a certain country to work out what it’s supposed to mean, but I also wonder how many Taiwanese people would catch on:

「可以說是台灣的uānn-thiap–ê 的柯寧參議員」

You could say Senator Cornyn is bosom buddies with Taiwan.

“uānn-thiap–ê” describes a close friendship formed by a blood-brothers style pact, wherein two friends exchange cards with information on each other (name, age, place of origin, family history), to forge a kinship. Now it’s used to describe good friends.

Another, more common term to describe a close friend is 「麻吉」. The term is pretty common and was even used for the title of the film Ted in Taiwan 《熊麻吉》:

There are several folk morphologies for this term, from the stickiness of mochi cakes (pronounced similarly in Taiwanese/ muâ-tsî) to a corruption of the word 「默契」 (though no clear reason for the corruption is given). The most convincing theory is that it’s a corruption of the English word “match” in Taiwanese. Whatever its origin, it’s a pretty handy word to use and will let everyone know that you’re in touch with the popular culture references of 10 years ago.