It's best to use sogou Pinyin. The way is as follows: For example, if you want a "中", just type a "中" in the input method, and a special symbol will appear below, so you can choose. Other special symbols can also be typed. That's how the special symbols in nicknames are typed.

瓸辶钅钅牱牜牝卩卪, 卋卒卙卛. 、、、、、、? 、、

\t? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 　★　☆　? ? ? ? ? ? ? ? ? ? ? ? 　ㄨ　? ? ? 　♂　♀　? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

\tthe symbol of love

\ t?

\tHand symbol

\t

\ tChess symbol

\ t

\ tNote symbol

\ t?

\tSun, moon, rain, cloud, meteor, umbrella, hot spring, snowman, ice crystal symbol

\ t ☉

\ tBuddhism, Orthodox Church, Nazi Cross, swastika, Lu Zhi, Lorraine Cross, Jerusalem Cross, Persian, Khanda. \ t scissors, airplanes, mobile phones, watches, hourglasses, envelopes, pens, pencils, copyrights, registered trademarks, service marks and trademark symbols

\t? № ℡ ℅ ‰ § ?

\tHouse, Macintosh command key, Apple, Enter key, nuclear energy, virus and HD symbol

\t

\ tSymbols of Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces

\ t