The Moon Sky Sect possessed a Mysterious Yin Cave that produced Mysterious Yin Cold Water. Certain yin-attributed spirit herbs could only be cultivated with Mysterious Yin Cold Water, such as Mysterious Yin Snow Lotus, Jade Yin Fruit, Snow Soul Flower, and more.
In addition, some medicinal pills could only be refined using Mysterious Yin Cold Water, such as Mysterious Cold Jade Elixir and Jade Cold Pill. Its uses were extensive. However, Mysterious Yin Cold Water was naturally formed by heaven and earth, and it took a very long time for a single drop to emerge, making it quite precious.
The Moon Sky Sect used Mysterious Yin Cold Water to cultivate many types of yin-attributed spirit herbs and fruits, selling them to other factions in exchange for cultivation resources. They would not readily sell it outside.
Han Wenlong truly had wanted to purchase Mysterious Yin Cold Water and give it to Han Changming for pill refinement. He simply had not expected to happen upon disciples of the Mysterious Water Palace fighting the Moon Sky Sect's disciples, prompting him to save the latter.
If word of his rescue of Liu Xin spread, he would certainly offend the Mysterious Water Palace. What he had done entailed considerable risk.
The best way to build a good relationship with the Moon Sky Sect was to oppose the Mysterious Water Palace. Yet offending the Mysterious Water Palace would also bring trouble to the Han Clan of Golden Flood Dragon Island. Fortunately, Han Wenlong had already advanced to the Void Refinement stage, so the pressure was somewhat less.
To befriend the Moon Sky Sect would inevitably mean offending the Mysterious Water Palace. Han Changming and Han Wenlong both understood this clearly, and it was also why they had developed separately.
On the surface, the Han Clan to