Happiness is happiness, blessing, good luck and positive energy.
Fuzi is usually written in black pen, because the paper used to write Fuzi is red paper. Writing in black pen is a collocation writing method passed down by China for hundreds of years. Various calligraphy forms will be used to write Fuzi, because Fuzi has a beautiful, happy and auspicious meaning, so the writing method of Fuzi is also changeable. But most of them are written with red paper and black pen.