In these ten years, over a hundred thousand mortals have been added to the island, and they have given birth to many offspring with Spiritual Roots.
However, due to the limited time, the oldest among them are merely eight or nine, having just completed three years of bone and muscle tempering, along with various basic Cultivation teachings, starting their Cultivation for only a year or two.
Among them, those with dual Spiritual Roots and the best aptitude have reached the third layer of Qi Cultivation, and those with poorer aptitude have barely stepped into the door of Qi Cultivation.
Thus, waiting for them to grow up would need at least another hundred years.
Unless the main family sends more cultivators to strengthen the power of Wanling Island, or the Sea Clan abandons the coastal area and stops attacking, Li Zhirui is not comfortable with leaving.