Mobs drop sbl and sbex in llgc, just not the first room. Well some sbl in first room but never sbex. Also mobs in hainan drop them. zodiac relics can be partly farmed in llgc, still need tablet after that. Or item mall can get you the materials through gambling. Rat relics were an event set and can’t be farmed anymore
If they would give a method after like half a year, the events would be something like preordering a game