The cash infusion would be to Grisaffi and not RMHB. The "required to contribute a sufficient amount of capital etc." is so vague as to be practically meaningless. Some talk of a firm commitment of $5 million is just made-up rubbish.
The Letter of Intent grants Li a binding option to purchase 100% of the Series A Preferred Stock from Grisaffi. Further, the LOI specifies that Li understands that when exercising this option, Li will be required to contribute a sufficient amount of capital to RMHB to fund the Company to move forward in the implementation of its expansion plans.