Well, to start, neither has been approved by the World Health Organization.
If that organization - which is a Chinese lapdog - doesn't approve their vaccines then it doesn't say much for the quality.
Further, I'm not sure why anyone needs to provide "proof" to you of anything. You presumably have google like everyone else.
But here, let me help you:
"“We will solve the issue that current vaccines don’t have very high protection rates,” Gao said in a presentation on Chinese COVID-19 vaccines and immunization strategies at a conference in the southwestern city of Chengdu. “It’s now under consideration whether we should use different vaccines from different technical lines for the immunization process.”
https://apnews.com/article/china-gao-<deleted>-vaccines-offer-low-protection-coronavirus-675bcb6b5710c7329823148ffbff6ef9
So, you see, even the Chinese think their own vaccines suck.