We had intended returning back to UK from Hong Kong in July 2020 by rail/road. Intention was a month exploring China and then Bejing, Mongolia, Khasikstan, Azerbajan (intended getting a cargo ship arcross the Caspian, wife wasn't keen!) Georgia, Turkey and then country hopping through Europe.
Sadly Covid spoilt all those plans. Still intend to do the Southern Europe area from the UK when covid allows in our new retirement toy.