Body position verbs: 站 (zhàn, stand), 坐 (zuò, sit), 躺 (tǎng, lie down), 趴 (pā, lie face down). 躺 specifically means lying on your back or side.
culture
躺平 (tǎng píng, 'lying flat') became a viral social movement term around 2021 in China, describing young people opting out of the intense work culture and competitive 'rat race'.