go: exposed alias struct can't assign to inner struct literal

I arrange my models in this way:

• projectDir

  • main.go

  • models

    • models.go
    • modelA
      • modelA.go
    • modelB
      • modelB.go

In main.go:
package main

import (
    "test.local/projectDir/models"
)

func main() {
    modelA := models.ModelA{
        FieldA: "xx",
        FieldB: models.ModelB{
            FiledC: "yy"
        } // here will raise a error: cannot use models.ModelB literal (type models.ModelB) as type modelB.ModelB in field value
    }
}

In models/models.go:

package models

import (
    "test.local/projectDir/models/modelA"
    "test.local/projectDir/models/modelB"
)
type ModelA modelA.ModelA
type ModelB modelB.ModelB

In models/modelA/modelA.go:

package modelA

import (
    "test.local/projectDir/models/modelB"
)

type ModelA struct {
    fieldA string
    fieldB modelB.ModelB
}

In models/modelB/modelB.go:

package modelB

type ModelB struct {
    fieldC string
}

As the error point out, the struct type is different. Is there a better way to organize the models?

The error is self explanatory: you are trying to assign the wrong value (models.ModelB) to a ModelB.modelB struct.
You can easily solve this issue by importing the correct package:

import (
    "test.local/projectDir/models/modelB"
)

func main() {
    modelA := models.ModelA{
        FieldA: "xx",
        FieldB: modelB{
            FiledC: "yy",
        },
    }
}