What cinnabar does Pixiu use to open his eyes?

Both are OK.

Use a brush dipped in cinnabar and point it on the eyes of Bafang Pixiu, which can be regarded as the completion of the cinnabar consecration of Bafang Pixiu.

Pixiū (píxiū) is a ferocious and mighty beast in ancient Chinese myths and legends. "Pixiu" is the male and "貅" is the female. Pixiu is also known as Tianlu, warding off evil spirits, and Baijie. Its origin is related to the beliefs of ancient people. It is mentioned in Volume 10 of Zhou Qi's "Mei Kao" in the Ming Dynasty that Pixiu is called warding off evil spirits because it can drive away bad luck, and it is called warding off evil spirits because it can attract wealth. It's called Tianlu. In the south, people often call it Pixiu, while in the north, it is often called to ward off evil spirits. Pixiu is divided into three types according to the number of horns. The one with one horn is called Tianlu, the one with two horns is called to ward off evil spirits, and the one without horns is called Peach Talisman. Today's Pixiu crafts mostly feature one corner, and are collectively called Pixiu. The image of Pixiu was born as a tribal totem during the Spring and Autumn Period and the Warring States Period, and was later widely used to refer to the army and soldiers. Pixiu was also used as a tomb-suppressing beast in the tombs of emperors after the Eastern Han Dynasty, or in front of the tombs of eunuchs. In modern times, Pixiu has been endowed with the belief function of making money and keeping money. Placing and wearing related handicrafts has become a kind of Feng Shui culture.