1. Actually, if Tyhee would have deemed the MOU material information they would have had to disclose it more or less as soon as it was signed or prior to the opening of trade the following day, probably early Friday judging from the signing date, Ming's announcement time and the time diff. Hence, the fact that they did not disclose it today shouldn't mean anything.
2. I agree that the document itself is of rather low interest. The fact that Tyhee (i) are in discussions with Ming, and (ii) does not consider the MOU material, could however be of some interest. Further, the fact that Ming announced could be of some interest i.e. if it shows that Ming is rather keen on investing in/with Tyhee (i.e. think the MOU is material) as opposed to that the disclosure rules on the Hong Kong exchange require disclosure at a less substantive stage. Finally, Ming traders obviously found it interesting.