"The quality of this jade is very good, and so is the carving. This could not have been done by just anyone."
"The character is in ancient seal script, it's a 'Qi,' and this character is slightly different from the ancient seal 'Qi' we are familiar with; this stroke is slanted, not horizontal. Only in the city of Western Wei in A.D. 708 was this type of writing used. After Western Wei, this horizontal stroke was always written horizontally."
"Considering all these factors, this piece of jade is likely an antique, probably carved during the Western Wei era. The inscription was naturally written in this manner, and it could also have been done by a remnant of Western Wei who completed it in the years following the dynasty's end, using the Western Wei style of script for the carving."
