In 1940, dropping out of Ritsumeikan Commercial High School (subsequently known as Ritsumeikan High School under the new system), Shimizu became Munemaro ISHIGURO's pupil to study Chinese ceramic art.
1940年、立命館商業学校（後の新制立命館高等学校）を中退して石黒宗麿に師事し、中国陶芸を学ぶ。