After the complete restoration of the Heavenly Track, the first three Immortals to arrive undoubtedly bore "private missions." They were all subordinates of the various Immortal Venerables. So, without a doubt, Master Martin also had an Immortal Machine.
The palm of Director Wu's hand didn't let go because using Heaven Realm Immortal Skills in the Lower Realm was quite inconvenient. Director Wu required physical contact to release the Radiant Thunder and avoid being monitored by the Heaven Realm.
Emperor Venerables could focus their power into a Personal Token and give it to the Immortal Venerables; Director Wu's incarnation could also seal his Immortal Skills and Divine Powers into treasures and hand them to his real self in the Lower Realm!
