Both are Variety Shows:
puzzles & mystery
investigations
team work

Great Escape is "Escape Room" themed

Both are Romance Dramas:
Historical aspects
Age gap (ML older, FL younger)
Melodrama, tearjerker
Beautiful costumes

Both are Chinese Variety Shows:
Extreme sports/activities
Building team spirit
Huang Minghao (Justin)

Both are Chinese Variety Shows:
Young celebrities trying new things/activities
Games with either group/individual competitions

Both are Chinese Variety Shows with:

Seaside / Beach Setting
Vacation style, Relaxed (no competition)
Multiple episodes spent overnight