China clay dolls from the late 70s

During the days when Mao's Little Red Book was still relevant, little clay dolls of China's kids playing ping pong, singing patriotic songs, doing acrobatic moves etc were very popular. They all had the same distinctive yellowish brown tinge of colour. I saw some sold by an elderly Chinese couple when I visited China Square's flea market for the first time last year. I chose 2 little girls which incidentally reminded me of my daughters. The older girl loves reading books and playing with animals while the younger one is always brandishing some Chinese kung fu moves or swinging a pole like a wushu exponent. These 2 dolls are fondly displayed on my sideboard.