Chuugoku Yome Nikki

From MangaHelpers: This is a diary-style 4-koma manga that depicts the daily life and observations of the 40-year -old author, who married a 26-year-old Chinese girl. The author immediately states that this manga-style blog was meant to show the quirky and interesting nature of his young wife. He is an extremely stereotypical "otaku" (Japanese nerd), while she is a Chinese girl enjoying and learning the Japanese culture.