Five Elements Star was the name of the planet Ning Cheng saw written on the Jade Slip. Five Elements Star was an unclaimed planet located outside of the Taisu Realm and had abruptly appeared out of nowhere.
The planet that had abruptly appeared was discovered by a lucky cultivator who found the Earth-attribute Chaos Energy within it. Even the name of the planet, Five Elements Star, was given by the cultivator who had obtained the Chaos Energy.
According to the message Ning Cheng saw on the Jade Slip, Five Elements Star was exposed after its external, hidden, protecting-star grand formation had fractured due to drifting in the void for too long. The location was clearly marked on the Jade Slip, even detailing from which position in the Taisu Realm to depart and the exact route to follow.