For the first part, see here.
Bei Jing (night-train hard sleeper, 27â‚¬) â‡’ Xi’an (sci-fi fast train, 18â‚¬) â‡’ Luo Yang (bus, 2â‚¬) â‡’ Deng Feng (bus, 2.5â‚¬) â‡’ Zhen Zhou (0.7â‚¬) â‡’ Keifeng (fast train, 27â‚¬) â‡’ Shanghai (train, hard-seat, 2.7â‚¬) â‡’ Hangzhuo (32â‚¬) â‡’ Guilin (bus, 1.5â‚¬) â‡’ Yangshuo (sleeper-bus, 15â‚¬) â‡’ Zhuhai (on foot, 0â‚¬) â‡’ Macau (boat, 13â‚¬) â‡’ Hong Kong (Air Asia, 103â‚¬) â‡’ Bangkok
Again, could be done cheaper (no soft seats or high-speed trains for example), but both were totally worth it for experience and quite a contrast to the hard seat, which is the cheapest train ticket available. Also it is cheaper to fly out from Macau than Hong Kong, but I found it out only after I had booked my flight.
Total for Helsinki-Bangkok: two months and one week of leisurely traveling and 622â‚¬, which is comparable to a cheap flight from Helsinki to Bangkok.
Good-bye China! It was nice visting you. Hopefully will see you again next March.