Been here.

According to the query on Phoenix.com, Naoko Takagi came to mainland China in 2005 to collect materials.

Naoko Takagi, born on March 26, 1974 in Yokkaichi, Mie Prefecture, Japan, is an illustrator and the queen of Japanese picture books. Her representative works include "150cm Life", "Going to Tokyo Alone", "One Person's First" "Times", "One Person's Food Run", etc.