passes, destroy the official tallies,
[These were tablets of bamboo or wood, one half of which was issued as
a permit or passport by the official in charge of a gate. Cf. the
"border-warden" of _Lun Yu_ III. 24, who may have had similar duties.
When this half was returned to him, within a fixed period, he was
authorized to open the gate and let the traveler through.]
and stop the passage of all emissaries.
[Either to or from the enemy’s country.]