Consequently , much of the lexicon of Putonghua found its way into Singaporean Mandarin .
After the 1990s , due to greater contacts between Singapore and mainland China , there was a large influx of new Chinese migrants from mainland China .
Much of the lexicon of Putonghua found Singapore 's way into Singaporean Mandarin .
After the 1990s , due to greater contacts between Singapore and mainland China , there was a large influx of new Chinese migrants from mainland China .