Kat Hing Wai was built four or five centuries ago by the Hakka Tang clan, one of the Five Great Clans that migrated here from North China .
The Hakka Tang clan built the Kat Hing Wai at least five centuries ago.
When the Russian army continues south, it will find itself in another mountain war--a mini-Afghanistan, this time against a tougher and better-organized enemy.