Many people find the experience of sailing exhilarating and novel.
The first few days just after boarding the ship are indeed like that, whether it's the surging waves, the azure sky, or the seagulls soaring alongside the ship's hull, all giving a sense of boundless freedom.
But when more than half of the voyage is over, facing the world of only endless waves under the same-colored sky, even the most curious individuals grow weary.
Not to mention the limited food reserves on board; to extend the use of resources as much as possible, the sailors mostly fish for their dinner.
Eating freshly caught sea fish for a meal or two is enjoyable, but after a while, paired with the barren seasonings from He Dao, it becomes torture.
Even Lu Ban had started to brew soy sauce and developed a way to eat fish raw, much better than spoiling the fish meat with various seasonings.