Popular introduction and Theoretical mechanism about PGE published

Popular introduction and Theoretical mechanism about PGE (Proper Gravitational Energy) have been published.
The Popular introduction article is on:
https://doc.diytrade.com/docdvr/380514/49516581/1575296628.pdf
The Theoretical mechanism article is on:
http://www.physicsessays.org/browse-journal-2/product/1573-17-liu-li-wang-from-einstein-field-equation-to-essential-quantization.html