It is more commonly known by its code name, Silkworm, which is a
Chineese copy of the Russian SS-N-2 Styx. Its been around for about 50
years, and was sold to nearly every Soviet client state. One of these
ushered in the ASM era when it struck the Israeli destroyer Eliat in
1967.

It shouldn't pose a threat to any modern warship that is ready for
combat.

It uses its own active radar for the entire length of the flight
(although some newer modified version use inertial guidance for the 1st
half of the flight), which should set off every piece of ESM gear on
any nearby ship.

Its quite large, and has a large radar signature. So its easy to lock
onto it and engage, it also has a pretty slow flight speed, so it
spends a lot of time within the ship's AA engagement envelope.