Complex sentence: The sophistication and quality of China's television production also improved dramatically in the 1990s during the Chinese economic reform, while the market also began to surpass Taiwan's as the economy became more market-oriented.
Split into simpler sentences: The sophistication and quality of China's television production also improved dramatically in the 1990s during the Chinese economic reform. The Mainland market also began to surpass Taiwan's market due to the economy becoming more market-oriented.