I dreamed that there were passengers on the railway under construction. The freight train is running.

There are many different interpretations of dreams.

1, dreams are manifestations of the subconscious mind. Authoritative works include Freud's Interpretation of Dreams.

2. Dreams reflect some omens, and the authoritative work is Duke of Zhou.

3. Dreams reflect some physical information. This study was written in Huangdi Neijing.

4. Dreams reflect people's normal psychological and physiological activities. It can be found in modern life science works.