The merchant had passed on the basic information to Liu Yang and company and promised to pay them one million yuan for their efforts once the child was in hand.
Money talks, and these people who didn't have much morals to begin with were immediately tempted by the huge sum of money.
After three days of planning, they first had Liu Yang's mother rent a room in the district where He Qing lived. She would then loiter around downstairs, get to know He Qing's mother, and slowly get to know her details, the child's name, his birthday, nicknames, etc.
With all the information on hand, they got Liu Yang's uncle to add He Qing on WeChat by pretending to be someone from He Qing's hometown. Then he obtained pictures of her daily life on her WeChat Moments so that they could be doctored into fake documents.