How did beria produce jade?
In the setting of Yuangu, there is no such thing as Altman giving birth to a child, only that Yu is the son of beria. G&D Altman is an experiment in itself.
It was Hisui Ikedai who fused beria's genes with Otter Capsule developed by Guang Altman, and thus created Jed Altman. In the play, beria also said that Jed was just an experiment. Strictly speaking, Jed only had beria's genes.
Extended data
Hisui Ikedai, a native of Strum, looks exactly like the earth, and acts as a science fiction writer Hisui Ikedai (alias "Fu Jing Chu K") on the earth.
When his hometown Strum was destroyed, Hisui Ikedai was saved by beria. Since then, he has been following beria. Because of his weakness, he longed for great power and was very loyal to beria, which was extremely powerful.
Under the direction of beria, he came to the country of light and stole the Ott capsules developed by Hikali Altman, and created an artificial life-Jed Altman (asakura) by using beria's genetic factors, and kept collecting other Ott capsules to help beria fully resurrect.