SAN DIEGO (FOX 5/KUSI) -- Friday marked the anniversary of when two giant pandas made their public debut at the San Diego Zoo.

The pair, Yun Chuan and Xin Bao, arrived in San Diego from China in June as a gesture of diplomatic goodwill between the U.S. and the East Asian nation.

Their arrival was the first time a giant panda from China had been sent to the U.S. in over two decades, according to the San Diego Zoo Wildlife Alliance.

Yun Chuan is a five-year-old male with a long, slightly pointed nose whose mother, Zhen Shen, was born at the San Diego Zoo in 2007. Xin Bao is a four-year-old female recognized by her large, round face and fluffy ears.

Both pandas were born at the Wolong Shenshuping Panda Base in Sichuan, China.

On Friday, families from Ronald McDonald House visited the zoo

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