China has many interests and investments around the world especially Brazil.Why does China need so much in Africa and Brazil, its because resources that count in the long run to fuel the race to a superpower nation.
A blunt knife or rusted knife can't be useful for anything just for the sake we call it as the knife similar to PayTM series or Sachin or Virat records.
Few examples are
1. Sri Lanka Under Debt trap of China-
Hambantota Port of Srilanka was built by a Chinese company and funded by Chinese loans.
But now Sri Lanka is struggling to repay that money, and so has signed an agreement to give a Chinese firm a stake in the port as a way of paying down some of that debt.
A similar thing is happening in Pakistan as China is developing China-Pakistan Economic Corridor with a huge investment but this will give China autonomy to some state in this corridor and a condition like Srilanka may arise.
3. China is also trying to woo the Bangladeshi government into its debt trap
And with its new initiative of One Road One Belt China is leaving its mark on the whole of Asia and emerging as a Superpower and for this does not support from any country because China is buying this support through money and its various economic projects.
"It is hardest thing in the world to be good thinker without being a good self examiner"