Polo asserts control over the TARDIS

Ping-Cho's bean-sprout soup serves as a prop that facilitates the initial conversation between the Doctor and Ping-Cho. The soup creates a moment of false camaraderie, masking the underlying tension in the tent. The Doctor's praise for the soup draws Ping-Cho into a discussion about the caravan, Tegana, and the broader political situation. While the soup itself is not central to the power struggle, it sets the stage for the revelations and conflicts that follow, providing a brief respite before the confrontation with Polo.

The TARDIS is the central artifact of this event, serving as both the object of contention and the key to the Doctor's autonomy. Polo reveals his plan to transport the TARDIS to Lop under Mongol supervision, refusing the Doctor's request to work on it during the journey. The TARDIS's unique and mysterious nature makes it a valuable bargaining chip for Polo, who intends to use it as a gift for Kublai Khan. The Doctor's inability to access the TARDIS highlights his vulnerability and the shifting power dynamics in the scene, as Polo leverages Mongol superstitions to assert control over the ship and the group.

The sledge is mentioned by Susan as a device Polo has ordered to transport the TARDIS down the mountain pass to Lop. While not physically present in the tent, the sledge symbolizes Polo's strategic leverage over the Doctor and the group. Its construction and use represent Polo's calculated plan to move the TARDIS under Mongol supervision, ensuring that the Doctor remains unable to repair it until they reach Lop. The sledge serves as a tangible reminder of Polo's control and the group's enforced cooperation.

The Mongol tent serves as the neutral meeting space where the power struggle between the Doctor and Marco Polo unfolds. Its cramped interior forces close proximity, amplifying the tension as Polo reveals his plan to transport the TARDIS to Lop. The tent's warm, flickering light contrasts with the external freeze of the Plain of Pamir, creating a microcosm of hospitality laced with strategic delay and unspoken power plays. The tent's role as a temporary refuge becomes a stage for Polo's manipulation, where the Doctor's authority is undermined and the group's vulnerability is exposed.

The Mongol caravan functions as the traveling group that shelters the Doctor and his companions while also serving as the vehicle for Polo's strategic maneuvering. The caravan's logistical prowess and hierarchical dynamics enable Polo to enforce his control over the TARDIS and the group, using the caravan's resources and personnel to transport the ship to Lop. The caravan's movement across the Plain of Pamir and the Old Silk Road underscores the broader journey's stakes, where the group's fate is tied to Polo's ambitions and the political intrigue of Kublai Khan's court.

Kublai Khan's imperial authority is invoked by Polo to command the Mongol warriors and assert control over the TARDIS. Polo leverages the Khan's name to halt potential conflicts and enforce his directives, demonstrating the reach of Kublai's power even in remote outposts. The authority of Kublai Khan's court looms over the scene, shaping Polo's actions and the group's forced compliance. Polo's ability to wield this authority underscores the broader political intrigue at play, where the TARDIS becomes a pawn in the power dynamics between Polo and the Khan.