Answer:Raton2009-07-02 21:59:51
If you are playing for 3 years already, you should know how hard it was to lvl up in the "ancient" times. Nowadays you can get rb in 1 day if you want to rb at lvl 120 and like 1 month or a bit less if you want to rb at lvl 130... Now everything depends on which class you want to play, which lvl you are atm and which gears you do have. But, let's say, you are starting from the beginning.
Lvl 1-40 you can easily kill peasants around TC and do your Monster Hunter quest (http://co.91.com/guide/quests/monsterhunter.shtml). After that you can take a slight break and start mining to finish "Searching for General Cai" quest (http://co.91.com/guide/quests/coachli.shtml) - you will need euxenite ores and this quest can bring you up to lvl 40 (at least it was like that 3 years ago =)). However, you can choose the easiest way and get plvled straight from lvl 1 up to lvl 70 in BI.
Lvl 40-70, as I mentioned above, you can get plvled at BI by any strong account (preferably archer). The other easy way is to ask 5 people per day to enlighten you (some can do it for free, some will ask payment) or enlighten your newb by your higher lvled accounts. While you are below lvl 60, each enlightment will bring you 1 lvl and 100 minutes of enlightment will help to lvl you up as well. Next way is to start your Bonus Equipment quests (http://co.91.com/guide/quests/defense.shtml) - first quests are easy, bringing good enough gears and lots of exp.
Lvl 70 up to 100 you can continue with Bonus Equipment quests or start your daily Monster Hunter quests. Don't forget about TG and normal slaying white named mobs, as we all did 3-2 years ago =) Try to collect as much money as you can by lvl 100 and at lvl 100 buy Talismans.
Lvl 100 - 110 with Talismans will be very easy in lab 1. On archer and warrior it's 3-4 hours without dbl exp pot and 2 hours if you will use dbl exp all the time. For the rest classes I can not tell you the timing, because I don't remember it =)
Lvl 110-120: don't waste your time in lab 2 or 3, go straight to lab 4. If you are any melee class, you will get from 110 to 120 in 1 trip. Archers have to get out to buy more arrows... If you don't have enough VPs for lab, you can lvl up in MC, however, more people there and less mobs usually.
At lvl 120 you can still lvl up in lab or MC and also start Demon Exterminator quest (http://co.91.com/guide/quests/demonexterminators.shtml) - this quest will bring you up in lvls very fast.
Also don't forget about Flame Lit event, PK tournaments, PKing others for exp (if you like PKing)...
Good Luck in your lvling!