From China Digital Space
Xí Dàda 习大大
In an effort to bring Xi closer to the people, state media often call him "Daddy Xi." "Daddy" comes from the Shaanxi dialect of Mandarin. Xi’s father, Xi Zhongxun, was born in Shaanxi, so "daddy" is a nod to this heritage. It can also mean "uncle," but either way connotes familiarity and warmth.
Netizens have riffed on "Daddy Xi" to highlight its patronizing tone. For instance, when hundreds of students at Beijing Normal University welcomed President Xi to campus with signs and cheers, some netizens remarked that these Xi fans "have everything but daddy."
The "Daddy" in "Daddy Xi" is sometimes written with the single character bǐ 夶.
See also Dama Era.