That's great! This is a species we don't hear much about. Would you mind posting more pictures of your adult setup? What is their care like?
"Hynobius yiwuensis" is a species which closed to "Hynobius chinease".
I found them in a hill (elevation about 100m,southeast of CHINA).
They enjoy wet environment,soft soil.You'll find bambood around.
They are afraid of high temrature.I keep them below 26℃ in summer.
I only took a half of the sac, didn't bring adult one home.
setup : Aquatic cotton,sphagna and water