When the Man-eating Flower died, Ye Yan received a huge amount of experience from the monster because it was not just a level 15 elite, but it was 6 levels higher than him, which gives a 35% bonus on the total amount, totaling 1,500 experience points, that he got all alone.
It still will take a long time for him to reach the 6,800 experience points necessary for him to level up, but if he can kill more high-level monsters, he can make a shortcut to level 10.
Fighting monsters of the same level of man-eating flower will put pressure on him, but it will be worth it. He is still a low-level player after all, and even if he dies, he will just lose 1% experience, which is a low amount, considering that the level 15 monster gave him 22% of the total necessary for him to get to level 10.