I'm a bit confused with the news because on the one hand some report that: "It's going to issue 3B in bonds tradable for bitcoin."
On the other hand we can see:
The bank: "is selling a cheap digital bond that buyers can invest as little as $100 in."..."the bond is “the first publicly listed debt security on a blockchain.”"..."Steven Wong, the chief operating and financial strategist for CCB Malaysia, added that the bank considered the issuance of the bonds as both a pilot project and an innovative offering. However, he also cautioned against rumors. “The bank is not dealing in Bitcoin or cryptocurrencies,” Wong stated.
From what I understood, the $3 billion worth of bonds would be available for trade in USD and also in bitcoins. Simply put; the bank is selling the bonds and you can buy them with bitcoins. The bank however is not dealing in bitcoins or cryptocurrencies and the trade would be facilitated by an intermediary;
The deal also allows investors to trade these China Construction Bank’s digital certificates using bitcoin, on Fusang Exchange, a digital exchange licensed by the financial regulator in Labuan, Malaysia. Trading of the bond, which can also be done in US dollar, will begin this Friday.
I should add that such a trade is not simple in execution and anyone interested should do their own research;
investors interested in these notes may also need to read through the fine print, according to the programme’s terms, trading of the notes will be subject to the guidelines of Fusang Exchange.
Source