Cháng le yì kǒu nǎinai zuò de jiǎozi, wàiguó péngyou shùqǐ le dàmuzhǐ: " tài hǎochī le! "
After one bite of Grandma's dumplings, our foreign friend held up his thumb: "Delicious!"
Tips
culture
In China a raised thumb means "great, the best", as in the West, while a raised little finger, 小拇指, means "you're the worst". Online the same praise is 点赞 "to give a like".