What should I pay attention to when attending Japanese birthdays?

Japanese people regard giving gifts as a material expression of expressing their wishes to each other. The gift is not thick. If it is delivered properly, it will leave a deep impression on the other party. China's Four Treasures of the Study, celebrity calligraphy and painting, handicrafts and so on are the most popular, but the size of calligraphy and painting should not be too large. Gift packaging should not be sloppy, even a box of tea should be careful. China people give gifts in pairs, while Japanese people avoid giving gifts in pairs. They usually use odd numbers such as 1, 3, 5, 7, but they are afraid of "9" because the pronunciation of "9" is the same as "bitter" in Japanese. According to Japanese custom, gifts for individuals must be given in private, not in public.

Happy birthday: ぉんじょぅびぉめでとぅ!

romagi:o tanjyobi omedetou

English simulation: Oh, exploration and comparison, Oh, wheat belt support.