qīnɡ
身轻如燕
shēn qīng rú yàn
as light as a swallow (agile and graceful)
油比水轻，所以油浮在水面上。
yóu bǐ shuǐ qīng, suǒyǐ yóu fú zài shuǐmiàn shàng
Oil is lighter than water, so oil floats on the surface of water.
轻装
qīngzhuāng
light equipment; to travel light