By Josh Horwitz SHANGHAI (Reuters) -China, grappling with a new wave of COVID-19 infections, took another step towards loosening its pandemic-related restrictions on Saturday when Hong Kong’s leader announced it would aim to re-open its borders with the mainland by mid-January. Speaking at a news conference upon returning from Beijing, Hong Kong Chief executive John Lee said authorities would aim to “gradually, orderly, and fully” re-open all entry points between the two sides, and coordinate with the government of nearby Shenzhen to manage the flow of people. At present, individuals hoping to…