Review Detail of LaoTze in The Divine Urban Physician

tl;dr it's ok for killing time, but it's also brain-dead. The MC's family was destroyed five years ago at a banquet, then he was apparently tossed into a river and drowned. But in fact, he was rescued by a mysterious old man, brought to a special place, and taught cultivation techniques. Then he comes back five years later to discover why his family was killed, and avenge them. Experts in the outside world only know martial arts, so although they have superhuman strength and abilities, the MC is always stronger and underestimated. Somehow in those five years, he cultivated high enough and learned enough about cultivation to continue to use his knowledge of cultivation to get stronger even in the outside world as he encounters increasingly stronger enemies. There are the cliche useless women that cling to the MC and the requisite face-slapping of arrogant young master-types. Of course, he develops several cliche forces in the business and martial world, and gains a "grandpa in a ring" cheat that allows him to crush enemies who otherwise would easily kill him. The plot is pretty linear: power up, get more powerful enemies, unexpectedly defeat them, learn something about his family and who killed them, and get even more powerful enemies, repeat. The main issue I have 370 chapters in is that the author does a poor job of providing reasonable motivations for the actions of most of the people and organization standing against the MC. It really deadens my interest in the novel.