I dont know the coordinates but from the inside of the lin kuei place, go to the exit, then turn right until you see a path behind some huts, walk in the path until you see a bridge guarded by jax, slap him then pass the bridge, the white lotus society is to left..I hope this helps

on earthrealm go south east where u will arrive at a bridge. u will see jax. walk past him and turn left. the guards that beat u up before will now let u thru. because i don't want to spoil things for you, i'll tell u that somwhere behind the bridge an arena will be waiting for u.

The 2 guards that stand before the Whit Lotus building don't let you through before Konquest mode is finished. You'll know you've finished Konquest when you get a message stating you've unlocked Shujinko.
As for actually unlocking Liu Kang, you'll have to go to Edenia, koordinates G-8, i think, where a empty tent stands. Meditate until Thursday 11:55 PM, or something close, because the chest unlocking Liu Kang only appears in the premises of the tent every FRIDAY between 12:00 am and 12:30 am( also known as very early in the morning)
Why did i say meditate until thursday? Cause Time goes very fast when you meditate, and you could miss the chest if you don't stop a little early.
Hope that helped, and enjoy Turkey boy