Reason:
1. After the Revolution of 1911, Yuan Shikai stole the country, the warlords separated, then the Northern Expedition, then the country confronted each other for ten years, then War of Resistance against Japanese Aggression, and then the war of liberation. The national political situation is always in turmoil, and the government is too busy solving the domestic situation to pursue cultural relics.
2. Imperialism is targeting China everywhere and forcibly interfering in China's internal affairs. Typical examples are the Paris Peace Conference and the Sino-US Friendship and Trade Treaty.
3. The economic situation in China is not optimistic, and people's livelihood issues need to be solved urgently. Recovering cultural relics is not a top priority.
As the saying goes, the economic base determines the superstructure. At that time, China's economic foundation was poor, people's thoughts were backward, and they didn't realize the importance of protecting cultural relics.
The above content is purely original. If you have any thoughtlessness, please ask Han Hai.