After Alvin returned to his courtyard, without stopping, he directly enter his room and isolate it with a powerful formation barrier.
After making sure that everything was arranged, Alvin sat cross-legged and took the Millions-Miles Transmission Plate from his storage ring that Lan gave him to contact his clan.
Alvin use his Qi to activate the formation plate, and it glowed. Suddenly the round silver formation plate divided into two halves!
Alvin flip his hand and a green runic plate with complex black patterns appeared in his hand.
This was a Coordinate Array that have only one function, and that was to record a specific location. These coordinate arrays were used with communication formations and without them these formations were useless.
Alvin's coordinate array naturally has his clan's location recorded in it, and now he was going to use it to send the information about Finn.