MTL - Flash Marriage with My Ex-Boyfriend’s Nemesis - Chapter 9 when to get married9

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?”

Baek Yigang is a son of the Baek Clan, one of the seven great clans of Zhongyuan. Afflicted with the Taiyin Qi Blockage, he is cursed with a shortened lifespan and the inability to collect internal energy. He had been peacefully spending the rest of his days indoors when he was ambushed by a group of masked people. During the ambush, he lost his servant who was like a sister to him. Chased by the attackers, Baek Yigang escaped through a secret underground path. When he came across a blocked path, he decided he’d at least die fighting and picked up a rusted sword that was stuck in the ground…

What would you say is the most valuable thing in this world?