Cao hunkered down in a bomb shelter as Russian shells thudded outside near the devastated Ukrainian city of Chernihiv – Copyright AFP Dimitar DILKOFF Laurie CHEN Cao never imagined his holiday in eastern Europe would involve hunkering down in a bomb shelter as Russian shells thudded outside near the devastated Ukrainian city of Chernihiv. The 25-year-old, one of about 6,000 Chinese nationals who were in Ukraine when war broke out, described feeling helpless and abandoned after essentially being told by China’s Embassy in Ukraine to fend for himself. “The embassy told us to find a way to solve the problems…