Secret codes

Visit China: Guangzhou

What is this?
これはなんですか

kore ha nan desu ka.

These are the secret codes to the above.
これは暗号です。

Kore ha angou desu.

How to say in Japanese: Secret codes

The Chen family have such a big business and huge wealth that they had to conceal the real numbers with 暗号 angou secret codes.