Passport is a legal certificate issued by
your country to testify your nationality and identity
when you cross one country's frontier into another country.
You must have the passport with you all
the time, the host country confirm your status according
to your passport. If you have accident or you need help
during the period of travel, passport is required.
If you lose your passport before you start your traveling,
you need to report to security authorities and passport
issuing office in your country immediately, and go to
local newspaper to report the loss of your passport.
If you lose the passport in China, you need to report
to local public security organs and your embassy in
China right away,
A passport with two opposing blank visa
pages and validity of at least six-month is required
for getting Chinese visa.