Chinese Foreign Minister Wang Yi arrived in Seoul on Monday for a two-day visit. He met with his South Korean counterpart Yun Byung-se and paid a courtesy call on President Park Geun-hye.
Wang and Yun fine-tuned details of a visit to Seoul by Chinese President Xi Jinping next month.
This is Wang's first visit since he took office in March last year.
Wang was quoted as telling Yun, "We're going to choose South Korea as a partner for closer cooperation in accordance with a new serious change in the regional and international situation."
A Foreign Ministry spokesman said the remark "was meant to reinforce the bilateral strategic cooperative partnership.
The two ministers agreed that the Seoul-Beijing cooperation "is particularly important for Northeast Asia," he added.
The two countries said they stand together against a fresh nuclear test by North Korea and agreed on the need for the "resumption of significant talks." China chaired six-party talks about North Korea's nuclear program until they came to a halt in 2009.