Object
Kublai Khan's Urgent Travel Summons
A discrete written message (likely a scroll) delivered by Ling-Tau to Marco Polo, compelling immediate travel to Shang-Tu. This object disrupts the caravan's plans, forces the abandonment of the TARDIS, and asserts Kublai Khan's authority over Marco Polo's decisions (Episode 18, Marco Polo Part 5).
2 appearances
Purpose
Transmit Kublai Khan's direct orders to Marco Polo for urgent travel to Shang-Tu
Significance
Disrupts caravan plans, compels abandonment of the TARDIS and gear, heightens the Doctor's desperation, and asserts Khan's overriding authority over Polo's decisions
Appearances in the Narrative
When this object appears and how it's used