Can Shanghai Ctrip Zhongshan Park Store change ringgit into RMB?

Of course. Converting into RMB can be done not only at the People's Bank of China, but also at Ctrip's foreign currency exchange point. Shanghai Ctrip Zhongshan Park Store is Ctrip's foreign currency exchange point, which can be exchanged without reservation and can withdraw money directly, so you can exchange ringgit for RMB.