I Became the Only Healer in the Academy Chapter 4 Discussion

Well I only read up to chapter 4 because I can't stand it, just in case you guys don't missundestand this novel is pretty good with a good translation but the novel still lacking in many such as

1) how the story telling when the MC moving between place

2) how the story telling when the time change

3) how the story telling when other character talk

4) how the plot of story too fast (for me) making the first five chapter not good

Well there is more but I just want to complain (I don't think this is spoiler because this information is available on early chapter) it is said that the medicine that his mother need is came from monster material but it is also said that the don't have a potion to heal a wound, how the hell they can create medicine to heal the mind of someone crazy with it but they can't created potion that heal a wound !?