It's to teach him to think for himself.
"Mother, I understand." Chu Jin pondered for a while. Although he hadn't come up with a method yet, he wasn't in a hurry.
"By the way, Mother, I also brought a kaleidoscope back for Nuanbao." He said, retrieving an item resembling a telescope from a pile of miscellaneous toys.
Handed it to Ye Muyu: "This kaleidoscope is somewhat like a telescope, but there are already things inside. So when you turn the wheel at the front, you can see different images changing. Speaking of which, when I first saw the kaleidoscope, I thought I had seen a ghost. These people from overseas are just too clever." Chu Jin said, unable to help but click his tongue.
"Wait..." Suddenly, he had an inspiration. "Mother, how do you think these overseas people discovered these things?"
