Sha Lin is a deadly champion with high DPS and fit with all range,but his weapon is projectiles which mean it will be harder to shoot fast or moving target
Use this opportunity by trying to jumping around and move as much as possible
If the tip of his arrow shimmers, he is preparing an Impaler Arrow. Avoid being pinned to the wall at all costs; his Planted will do 2400 damage before you can even move again, and likely another 2400 to follow, killing anyone.