after 1795, 李洙(Lǐ Zhū)[Lee Soo] et al., chapter 19, in 重刊老乞大諺解/重刊老乞大谚解(Chóngkān Lǎoqǐdà Yànjiě) [Reprinted Nogeoldae, with Korean Interpretation]Ogura Coll.Asami Coll., volume 1, page 48:
(Older reading) ᄬᅮᆼ(vvuq) appears to actually correspond to (modern) 逢(modern Mandarin féng), while (newer reading) 풍(puq) appears to correspond to (modern) 碰(modern Mandarin pèng).
The initial of (newer reading) ㅍ(p) is not the typical reflex of (older reading) ㅹ(vv).