Taking a look at the Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter - YouTube
Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter Unboxing and Set Up - YouTube
Amazon.com: Onep USB C to Mini DisplayPort, Onepeace Thunderbolt 3 Cable to USB C 6.6FT, Compatible for MacBook ProAir 2020-2016, Surface Book2, Galaxy S2191020 (NOT Thunderbolt 2) : Electronics