PR will be a core service inside S4 content agency MediaMonks.
The Shanghai-based creative shop more than doubles the MediaMonks headcount in China and represents an infusion of "culturally relevant creativity", the company said.
Performance agency Metric Theory will merge with MightyHive and integrated agency Decoded will merge with MediaMonks.
YEAR IN REVIEW: As the pandemic crippled adspend, older networks preserved cash, while newer operators made opportunistic deals.
Sir Martin Sorrell's business makes 55% of its money from tech, well ahead of any other sector.
When Sir Martin Sorrell acrimoniously left WPP after three decades in 2018, he responded immediately by launching S4 Capital. Two years later, it is worth £2 billion. Campaign went to visit him to discuss what drives him and why he keeps attacking his old company.
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