Gan Lanlan's death had been properly dealt with, including results from both her employer and family. Her body had already been cremated, and the case was closed.
The cause of her death was determined by the forensic expert to be asphyxiation due to a large amount of water inhaled into the trachea leading to the closure of the respiratory tract. In layman's terms, she drowned. When her body was discovered, her hands and feet were tied together with a thin wire, wound around the water inlet of the swimming pool, and her body was in a prone, curled position.
Because that corner was the deep end, the other people frolicking in the pool were all in the shallow end, and the lighting wasn't very good at night. Thus, no one noticed how she entered the water alone and died, nor did anyone see the alleged perpetrator, Jiang Qingping, taking her down. By the time she was pulled out, she was already lifeless.