Black & White Episode 12

It seems there's a secret hidden in Shrek's past, but even he himself doesn't know the truth. The Investigation Bureau agent requests Xi Ying's assistance in finding the missing rifle's whereabouts but also asks for Shrek's fingerprint because there's an issue with Chen Zai Tian's real identity. Xi Ying, who always suspects that there's a mole in the department, feels very confused. The courageous Chen Lin keeps on approaching Shrek, but she sees another side to him. Which one is the real him? (Source: Viu)