Dingbei Hou's doctor brother

(Double male protagonists + top has a crush + bottom falls in love over time + double purity + vest + saving the world) In a corrupt and chaotic world, Lu Ziqing, a rural itinerant doctor, was recruited by chance to enter the Daning Palace and find out the truth about his master and sister being captured by hidden masters. He joined the army as a military doctor and followed the army to the Northern Expedition. He risked his life to gain the trust of Dingbei Hou Xiao Yan and was successfully recommended to enter the Imperial Hospital. However, he was regarded as the lowest class by the wealthy and powerful and was not worthy of being on the stage. As the truth of the investigation was revealed, a series of old cases, shocking conspiracies and true identities were revealed one after another, and he was trapped in prison... Lu Ziqing saved people with his hands, but people in the world could not tolerate his identity nailed to the "lowly pillar" by class. Original...