If it helps, I think Ting-Lu comes from 鼎錄
dǐng lù (as in dinglu, a kind of tripod cauldron) and 鹿
lù (deer)
also as in this work of literature, the "Yu" part of Chi-Yu comes from 玉
yù (a precious stone or jade) and 魚
yú (fish), Chien-Pao comes from 劍
jian (sword) and 豹
bào (leopard) - I think they are meant to be pronounced like these words. I don't th
The Chien in Chien-Pao is sort of like shee-en, then, I think?
I don't know about Wo-Chien, though. I think I remember people tossing around "jianwo" as something snail-related before we knew its real name, but I don't think I ever found out what it was exactly. Khu had talked about the four of these as dinglu, yuyu, jianbao and jianwo before release, so their final names are definitely related to those!