. When a fire happens, the guards collect from
their different stations to assist in quenching it, and to carry away the
goods to the stone towers, or into the islands in the lake; for during the
night none of the citizens are permitted to go out, except such as are in
danger from fires.

The khan keeps always a large body of his best and most faithful soldiers
for the security of the city, which is the largest and richest in the whole
earth; and besides the small guard-houses on the bridges already mentioned,
there are larger lodges built of wood all over the city, for the
accommodation of parties of guards to preserve peace and order. On the
reduction of Mangi to obedience, the khan divided it into nine great
provinces, placing a viceroy in each, to administer the government, and to
dispense justice. Every year each of these viceroys gives an account to the
tribunals of the khan at Cambalu, of the revenues, and all other matters
connected with his government; and every third year, the viceroy, and all
the other officers are changed. The viceroy, who resides in Quinsai,
commands over 140 other cities, all large, rich, and populous; nor is the
extent of this government to be wondered at, as there are in Mangi 12,000
cities, all inhabited by rich and industrious people, in every one of which
the khan maintains a garrison proportional to its greatness and importance,
in some 1000 men, and even up to 10 or 20,000 men[9]. These are not all
Tartars, for the Tartar soldiers are cavalry only, and are kept in places
where there is conveniency for exercising their horses. The great majority
of the troops in Mangi are Kathayans, and the garrisons in Kathay are
composed of people from Mangi. Every third year, such a number of men fit
to carry arms as are wanted, are selected for filling up the garrisons, and
are sent to serve in places, at least twenty days journey from their homes;
and, after serving four or five years, they are permitted to go home, and
are replaced by fresh recruits. Most part of the revenues of the khan are
expended in this way, and on the other necessary expences of government;
and by this distribution of so powerful a military force, an army can be
suddenly called together in the event of any town rebelling. In the city of
Quinsai there is a constant garrison of 30,000 soldiers, and the smallest
city in all Mangi contains at least 1000 regular troops. If any person is
not able to work, he is carried to some ho