Qi Tian referred to this Stone Milk Cream as Stone Milk Essence; both take on a paste-like form, even easier to transform into ultra-high-purity Spirit Qi than top-grade spirit stones. Moreover, Qi Tian had a somewhat immature idea: both Spirit Qi and Stone Milk Essence are fluid in nature, they penetrate everything. Since ultra-high-purity Spirit Qi can directly enter the Qi Sea, perhaps Stone Milk Essence could also directly get into the Qi Sea. Additionally, according to Qi Tian's knowledge, Stone Milk Cream is a remarkably precious material for alchemy. Perhaps some cultivators directly absorb Stone Milk Cream as a medicinal pill.
With the Stone Milk Essence serving as a substitute for the ultra-high-purity Spirit Qi, what Qi Tian needed to do was to figure out a way to introduce the Stone Milk Essence directly into Jin Jin's Qi Sea. If he could achieve that, then Jin Jin could be saved.