Should English be written obliquely?

-Words in English are written obliquely. -That stupid Dan girl doesn't believe me. I'm looking for evidence. sorry Hehe, there is no evidence. According to some classic British and American movies, letters are written with chicken brush, and those English are italicized. So I think English should be written tactfully from the beginning. In modern times, writing like ordinary printed words has become a common habit; Occasionally I see italicized English on postcards/advertisements, which is decorative or deliberately eye-catching.