Complex sentence: The red envelope feature significantly increased the adoption of WeChat Pay; a month after its launch, WeChat Pay's user base expanded from 30 million to 100 million users, and 20 million red envelopes were distributed during the New Year holiday.
Split into simpler sentences: The red envelope feature significantly increased the adoption of WeChat Pay. A month after its launch, WeChat Pay's user base expanded from 30 million to 100 million users, and 20 million red envelopes were distributed during the New Year holiday.