This is interesting story, I get a good laugh out of it like act as some sort of bumbling idiot even being OP as hell, I like how you wrote the table has been turned on them.
But..... I think this could use some more description you know like cooking tiger not just written as cooking and eating maybe you could describe the process itself like skinning the tiger, then cut the best part ( maybe ribs, shanks, whatever) leave the dirty organs or describe something like Tiger Liver have especially good quality, like how it was cooked? Is it Stirred? Roast? Grilled or maybe steamed? There is a way to make cooking something as part of lore dumping like what seasoning they use? Is there any fancy herbs? Maybe unique sauce?
There is also mention of forest should take some time to describe how the forest looks like, any bioluminescent plants? What kind of tree there is? Crooked trees or maybe vines sprawl?
Also like the cultivation school, how's the school looks like? White pagoda, large courtyard, massive gate, with thousands of staircase in the mountains or like floating island?
there is also part like person, should describe what they look like, like skin color, face features of there is any, how tall they are, how broad, how their body looks like? Lanky, Stout, athletic, fit, etc, like our sister probably could be described how she grow up to be? How tall? What's the difference now and back then? Roulan is beautiful ofc but what kind of beauty? Innocent? Natural? Sharp? Or maybe cute beauty? Did she blushed, stutter or maybe if you're writing for adults could also describe her bust? Is it large or average or small? Describing more of the character in detail will make reader care about such character, like Roulan mother I understand she's kind person a healer but what else, maybe she bake snack for MC? Small little things like that will invoke emotion from the reader and make reader more and more sympathetic towards her, while some would see this as railroading it is in a good way railroading.
Take more time to describe, ofc it could be filled with reader imagination, telling stories is like creation.... Show us reader how vibrant and wonderful this world you're building, I understand the fast pace probably because MC still a child, it maybe limiting but still in my opinion a bit more description/narration would make the story bloom.