Show me what you can do
Check out his frame data, then you can learn his pressure. Liu is neutral on a bunch of stuff, so you can poke out. It won't be guranteed, as he can jump, poke, counter-poke, etc. Here's the basic stuff:How do I get out of Liu Kang's pressure when I'm getting mix-up'd faster than I can react? I've only just recently played a really good LK up-close but goddamn I had a lot of trouble. ( I main Noob Saibot and Sektor by the way, I have less problem using Reptile. )
f12 can be poked out of, but be wary of f121 and f12 into EX Lowfireball
b312 can be poked out of, watch out for a counter poke, as it's neutral on block. He can also jump afterwards.
f3 is neutral on block, and hits overhead. Not much you can about this, just watch out for it.
f4 is a somewhat slow low, neutral on block. Be careful on this one, as he gets random frame advantage if you try jump out. Tricky mixup when used with f3, as both come out somewhat slow.
Hope this helps.