India, March 10 -- A Chinese man who unexpectedly learned he was adopted 34 years ago was left even more shocked when he discovered that his biological sister had been living just 500 metres away from him. According to a report by South China Morning Post, the man, Zhang Lei, made the life-changing discovery after a heated family argument.

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Zhang, 36, an advertising company owner from Nanyang in Henan province, had always believed he was the biological son of his adoptive parents. His belief was reinforced by a baby photo he carried in his wallet, assuming it was his own.

However, everything changed during a family dispute whi...