"The proximity and the high level of technology available in Korean companies make them more attractive to China," said Bernard Aw, a strategist at IG Asia in Singapore. "Chinese companies are snapping up acquisitions because they are sitting on a good cash hoard."
Anbang Insurance Group agreed to buy Tongyang Life Insurance for 1.13 trillion won in February in this year's biggest deal, while Champ Investments acquired a stake in Jeju Semiconductor for US$35 million. Jumei International Holding made a US$125 million cash investment in cosmetics maker It's Skin and biological researcher Dream Cis lured a US$23 million injection.
Research-driven Korean companies are spearheading a "creative economy" envisioned by President Park Guen-hye, helping revive growth in Asia's fourth-largest economy.
Medical and consumer companies based in the country dominate the top 10 performers on the MSCI Asia Pacific Index this year, with Hanmi Science surging eight-fold after clinching deals to sell lung cancer and diabetes treatments overseas. Celltrion more than doubled after developing an arthritis medicine.
Acquiring new technologies could help Chinese companies meet demand for a growing domestic market. Consumption accounted for more than 58 per cent of the nation's expansion in the first nine months of the year, versus 43 per cent for investment. Retail spending climbed 11.2 per cent in November - its fastest pace this year.
"Entertainment, media platforms or games companies are among sectors they are targeting," said Lee Seung Jun, managing director for active investment at Samsung Asset Management in Seoul, the nation's largest fund manager.
Chinese companies "need cutting-edge technology and high-end design for quality of growth".
Chinese investment in Korean companies remains comparatively small.
China's acquisitions involving companies worldwide jumped 83 per cent in 2015 to US$516 billion as buyers snapped up premier assets ranging from the world's biggest luggage handler to Italian tire brand Pirelli. The Asia Pacific region represented 87 per cent of the total, followed by Europe at 5.9 per cent.
Investors betting that Chinese investment will lead to sustained share-price gains may be disappointed, said Im Sangkook, Seoul-based head of portfolio strategy team at Hyundai Securities.
Redrover has fallen about 4 per cent since Suning Universal agreed to invest US$10 million in the company in June. Chorokbaem Media has given up most of an 89 per cent rally sparked by DMG Entertainment and Media Co's investment of US$21 million in September.
"People tend to blindly pursue these names without considering the synergy effect or actual fundamental improvement," Im said.
Still, Chinese deals in Korea are likely to increase as the country's increasingly affluent middle class spend more on health care, entertainment and technology, according to Li Xiaoyang, a professor at Cheung Kong Graduate School of Business in Beijing.
"The booming middle class in China tends to care about brands and quality," Li said. "Korean firms tend to emphasise quality and efficiency, which are lacking among Chinese firms."