However,an anti-Japanese activist named 童増Tong Zeng had started making demand for the return of “Stolen Chinese treasure hidden in Imperial warehouse” for a while in the early 90’s.I’ve read a translation of the chinese paper once and he was asked what exactly is the “stolen treaure”and couldn’t answer what it was…

I’m not at all against of sending the rock back to China,but as MTC remotely pointed,there is now a claim in South Korea that Parhae was a Korean kingdom,and not a Chinese regional administration as Beijing had claimed.Which means Parhae can become another point of Sino-Korean dispute just like Koguryo.

The legends say that refugees from Koguryo founded Parhae. If accurate, it is possible that some of Parhae spoke a language akin to Japanese. A more direct link probably existed too: many Koguryo refugees settled in Japan following the collapse of that kingdom in 668. It would be likely that some of the ruling class of Parhae had blood relations living in Japan.

As for Japan’s role in preserving the culture of Parhae, is seems the only surviving examples of Parhae poetry are the verses the Ambassador of Parhae wrote during his visit to Japan that are preserved in the records of his host Sugawara no Michizane.

Why do you honor the claims of the sons and daughters of the Tang–Parhae’s oppressors–over the stewardship of stone by the descendants of Parhae’s friends?