chūchūn
чучунь
чу1 чунь1
http://www.chinese-russian.com/zd/ci/73277
chǔchūn
чу3 чунь1
http://www.chinese-russian.com/zd/ci/157517
chùchún
чу4 чунь2
http://www.chinese-russian.com/zd/ci/121796