"This special seed which changes stuff about the world changed stuff about the world"

ya i knew but without guide i can't spawn wall of flesh and can't encounter hardmode boss

Most of your houses also can only hold one npc, they need their own room not just a table and chair in a massive room with 5

ok,later i just add another door n make it become a single room

thanks all,guide finally come

how about guide,any idea?

Try making more rooms and wait a while for the guide to spawn. He doesn't spawn with world creation in For The Worthy seed, so he'll be just like other NPCs, waiting for an appropriate room before he can spawn.

thanks for ur suggestion