Food Captures Another World

Zhang Hao, an otaku who likes online shopping, was involved in the "Summoning of Braves from Another World" ritual and came to another world inexplicably. However, the identities of the other summoned people were all "braves from another world", and he was also a "passerby involved in the summons from another world"? What's even more outrageous is that the skills obtained by others are either "Holy Spear Skills" or "Holy Sword Skills". Why did he change it to "Taobao Skills"? How can Zhang Hao, who knows nothing about anything, get around in another world?