In the 'Xia Ke Xing' story, there are a number of indications/clues that show SPT to be the 2nd son of Shi Qing and Min Rou.
Here are the clues:
- SPT and Shi Zhong Yu look very alike and can pass for twins.
- SPT was rised by the woman who kidnapped and supposely killed the Shi couple's 2nd son.
- SPT's adopted mother, Mei Fang Gu, called him 'gouzhazhong' which is equivalent to 'bastard' and MFG has always hated thet fact that Shi Qing chose Min Rou over her.
- MFG also ill-treated SPT and sometimes talked to SPT like she was talking to Shi Qing.
But there is one fact that can disprove the theory that SPT is the Shi couple's 2nd son.
From Min Rou's account of the event of her 2nd son's kidnapping and eventual murder, MFG has sent back the corpse of Shi's 2nd son to the couple. If the corpse was a fake one, how can she not recognised it? How can she not recognised her own baby? She has been with him for 1 month already.
P.S. I haven't finish reading XKX. So, I stand corrected.