Early the next morning, as the sky started to lighten, Wan led a team to set off in search of Li Shan's old acquaintance, Wu Yan.
Their goal this time was very clear: to find personal items used by Li Shan during her lifetime.
According to the principles of modern DNA technology, as long as sufficient biological samples containing DNA can be extracted from these items.
For instance, from Li Shan's used toothbrush, comb, towel, and so on, even if ten or fifteen days, or even as long as a year has passed, as long as the shed cells or biological traces on the carriers are well-preserved, it is entirely possible to successfully extract effective DNA components.
Tracing and confirming the deceased's identity through personal items is an extremely important clue in current criminal investigation and identity identification.
