After moving from the dormitory of the college-affiliated middle school to the Merlin family, the adopted daughter of the Merlin family, Louisa, gave Dongzhi a camera. The camera is a bit old but functional. Dongzhi is not used to pointing the camera at herself, preferring to record the collected samples and materials.

When the war ended and he left Moore, Dongzhi thought twice about his small bag and put the camera into his backpack.