Three pieces of evidence in the world proving there are no ghosts

First, the Japanese army massacred over 300k of my compatriots in Nanjing that year. If ghosts really existed, the spirits of these 300,000 compatriots would have already destroyed the Japanese army, but the facts prove otherwise.
Second, when Qing soldiers entered the pass that year, they caused a bloody storm—Jia Ding Massacre, Ten Days in Yangzhou, leaving hair but not heads, leaving heads but not hair—countless Han Chinese died tragically. If ghosts really existed, these dying spirits would have already destroyed the Qing soldiers, but the facts prove otherwise.
Third, in the 1980s and 1990s, many old houses across the country were rumored to be haunted or inhabited by fox spirits. But later, large-scale demolition and urban construction tore down these old houses, and nothing remained. If ghosts really existed, these ghosts and fox spirits would have already sought revenge on developers and demolition crews, but the facts prove otherwise.