Treading the Heavens Without a Trace.

Summary

The advancement in puppet mechanics through the wind-flame composite Heavenly Secret restrictions has led to breakthroughs in Chen Hai's ideas, particularly in creating a wind-flame airship. This airship utilizes hot air for levitation and sails for maneuvering, requiring a lightweight yet sturdy rigid airbag made from giant avian bones and tempered iron. With prototypes over 50 meters long, they can carry 200,000 jin, offering military potential despite lacking offensive capabilities. Chen Hai's plans involve separating from Hexi to establish the Tianji Academy, ensuring independence. Emotional farewells occur as old ties are severed, and new paths are forged, with a focus on cultivating talent and establishing a Dao soldier camp for defense.

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