Therefore, he would have no doubts about the relationship between Li Yixin and Hou Youbo, and he even admired Hou Youbo, an intelligence officer working for the secret service of the Ministry of Foreign Affairs. Apparently, Hou Youbo has been working for the Japanese Empire for a long time, and was recruited before the empire launched this holy war and carried out secret operations in China, so it is possible to know people like Li Yixin.