(Second update)
"Roooaaar!!!" Far out on the sea, a strange fish's head, over a hundred zhang long and covered in scales glowing blue, emerged from the water. Four long carp whiskers grew around its mouth as it roared toward the heavens. Most of its body remained submerged, rainbow-colored light shining through the sea. Although its entire body was not visible, those four distinctive carp whiskers alone identified it as the legendary Divine Fish.
"Bzzzt! Crackle!" As the Divine Fish roared skyward, its four carp whiskers quivered incessantly, releasing astonishing flashes of blue lightning.
"Xian'er! Activate the formation!" Li Xiaoya suddenly realized that the Divine Fish had entered the area covered by Liu Xian'er's formation and hurriedly sent her a voice transmission.
"Mm!" Even without Li Xiaoya's reminder, Liu Xian'er had already taken out a formation flag. Her attainments in formations had once been far inferior to Mother Li's, but after more than a hundred years of cultivation, her Nascent Soul Realm cultivation and frequent consultations with Mother Li had allowed her to master several powerful formations.
"Whoosh, whoosh, whoosh!" Liu Xian'er suddenly revealed herself, hovering in the air. Her fingers rapidly formed hand seals as she waved and shook the formation flag. Spiritual light blazed from it, tracing blue runes across the sky.
"Roooaaar!!!" The Divine Fish spotted Liu Xian'er as well and suddenly looked furious. This was its territory, yet a human dared appear here! Its angry roar shook the seawater within several hundred zhang into a frenzy, throwing up countless sprays. It opened its enormous, blood-red maw. Bzzzt! Countless bolts of lightning flickered inside, their crackling enough to make anyone's scalp crawl.
"Go!!!" Liu Xian'er finally finished her incantation and thrust the formation flag forcefully toward the Divine Fish.
"Boom! Boom! Boom!" A chain of explosions rang out.