The chalks are drawing flowers on the chalkboard, but someone keeps stealing their artwork! Who could the thief be? Fortunately, Sergeant Blue is on the case and determined to solve the crime.
- ISBN10 7545551095
- ISBN13 9787545551099
- Publish Date 1 November 2019 (first published 13 November 2018)
- Publish Status Active
- Imprint Tian Di Chu Ban She
- Format Hardcover
- Language Chinese