Gotta ask a tough question to some here.
(beyond "can you read?" as that is a conclusive no)
Should you be investing in the stock market without a grasp of simple math?
Let's roll out the worst case, as discussed above.
15% Zijin +24% CATH =???
Not 51%, not a controlling stake.
Avz has first right of refusal in relation to Dathcom Shares.