I use the node express framework and the sequelize model.
There is no problem with the API being referenced in the controller layer, but when the model layer is defined, the printed model is empty

var Models = require('../config/sequelize')

As shown in the figure, the model layer is all table models. I want to add a hook in it. When no data is added to the station table, another table automatically adds a piece of data, similar to the trigger of mysql. However, when running the code, the model It’s always empty,
I’ve been struggling for several days, please help me, thank you