Players who buy the Early Access will get the special edition for free. This special edition is only available in the Early Access version, and it will not be available in the full version in the future. After the successful purchase, players can obtain the special Gu Impactor left by JiuXun's mother : "Spiritual spider" in the item box.
At the same time, players can strengthen "Spiritual spider" with the same method as strenthen Jiuxun's "Tiger Wasp"
Early Access Special：Spiritual Spider
Source: Steam Community (opens in a new tab)