From Family Fisherman to Water Virtue True Immortal

Li Quangqing traversed to the cultivation world and became a family fisherman, starting with twenty acres of fish ponds.
Unexpectedly, every time spiritual fish were harvested, a reward orb could be obtained.
[Harvested one adult big green fish, received a lower-grade water arrow talisman!]
[Harvested one adult iron bone crab, received the "Gengjin Sword Technique"!]
[Harvested one adult longevity turtle, received the "Gui Sui Shou" pill, prolonging life by twenty years!]
...
Since then, Li Quangqing watched the tides rise and fall in the world, the wind and clouds changing, wanting only to raise fish and become immortal peacefully.
Until thousands of years later, a certain Water Virtue True Immortal appeared out of nowhere, shaking the immortal realm, capable of covering the sky with one hand.
"Since the Milky Way is also a river, it's okay for me to use it for fish farming, right?"