I think it's somewhat telling that DRC seem to be looking for foreign investment from anywhere other than China myself.
Chinese now attempting to force their way in further through the outdated, corrupt and unethical ways of the past.
If you look at DRC history the Chinese influence is an extension of the exploitation which was previously carried out by Europe and the West. With DRC's wealth flowing out to everybody else other than a corrupt few who are willing to sacrifice the lives of their own people for personal gains. To exit this cycle it's critical for DRC to diversify investment and take back control of their resources.
They just can't allow any foreign power to muscle in and continue the exploitation or this will continue for decades to come.
FT and his government are looking to be making the first significant progress towards breaking the cycle. By no means an easy task with a system that's been entrenched for centuries and forces of money and power working against them.
China will need to change their tune in many ways imo including offering Zijin's head for the chopping block.