Complex sentence: The difficulties faced in implementing national identification systems has caused the Chinese government to reconsider those customs: lately, it has promoted laws permitting parents to grant their children either surname or either combination of their surnames in the hope the more unusual ones will prove more popular.
Split into simpler sentences: The difficulties faced in implementing national identification systems has caused the Chinese government to reconsider those customs. Lately, it has promoted laws permitting parents to grant children either surname or either combination of their surnames in the hope the more unusual ones will prove more popular.