Writing the pronunciation above a character is normal when the character is rare or has an unexpected pronunciation. For example recently 龘 was often written wi

Writing the pronunciation above a character is normal when the character is rare or has an unexpected pronunciation. For example recently 龘 was often written with the pinyin above. Writing a different pronunciation with a different sense is also often seen on WeChat or in adverts. Often with a positive meaning in characters and a negative meaning in pinyin.