The Japanese kids are doing the demonstration in the video, but in the headline, Chinese students are the ones who are attributed to having invented the method.
As a high-school student with a strong interest in biology back in the mid-1970s, I remember well the story of Bruce Dunn. It was featured in the news back then, and I was very impressed with his achievement. Therefore, it irks me that a group of people would try to rip off Dunn's discovery and present it as their own.
Once upon a time I served on editorial review board for a couple of scholarly journals, and I was very keen to look for plagiarism when reviewing manuscripts. My field was educational technology, and I knew the literature well enough back then that I would know when someone was faking it.
My other pet peeve was when a researcher did not strictly adhere to the scientific method when conducting research, presenting findings, and drawing conclusions. That is the big problem with much of science today; politics often overshadow honest research, and as a result, shoddy research of often goes to publication. It's a sad state of affairs.