tà qīng
lit. tread the green; go for a walk in the spring (when the grass has turned green)
spring hike season around Qingming festival 清明, 4th-6th April
tà qīng shǎng huā
to enjoy the flowers on a spring outing (idiom)
tà qīng shǎng chūn
to enjoy a beautiful spring walk (idiom)