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The subway system in Chengdu, Sichuan province, is trying something new to ease commuter stress-it has posted a series of funny messages on a billboard that also features rolling eyes.

"Some of those phrases, such as 'who cares?' and 'how dare you' are used daily by young people. I think such humorous advertisement should be encouraged in public places. It's a good way to relieve stress."

Ge Yujuan, 22, college student in Shandong province