The magic track kit from aliexpress only includes one connector between the magic track and the solid tracks.

I used the connector from my other thing https://www.printables.com/model/657421-magic-tracks-original-to-chinese-adaptor to provide the magic track side of the connector.

https://www.aliexpress.com/item/33052283461.html

One of the photos demonstrates the use of the solid to chinese magic track being used with the adaptor for chinese magic track to original magic track, (my children figured that one out pretty quick)

Print Settings

Printer Brand:

Creality

Printer: 

Ender 3

Supports:

Yes

Resolution: 

.2

Infill:

20%

Filament:

Generic PLA 

Red

Notes:

Supports are needed to cleanly generate the magic track side of the connector, but change the setting to touching build plate.