Giant panda cub Yi Yi plays at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China. (Photos: Xinhua)

Giant panda cub Yi Yi holds the bamboo slips with its name at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi eats bamboo at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi (L) and its mother Liang Liang eat bamboo at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi (L) plays with its mother Liang Liang at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi (L) and its mother Liang Liang eat bamboo at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi plays at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi plays at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi (L) and its mother Liang Liang eat bamboo at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi plays at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi plays near the bamboo slips with its name at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi eats bamboo near the bamboo slips with its name at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi plays near the bamboo slips with its name at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi eats bamboo near the bamboo slips with its name at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi (R) and its mother Liang Liang eat bamboo at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi eats food near the bamboo slips with its name at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi plays near the bamboo slips with its name at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi plays near the bamboo slips with its name at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi plays near the bamboo slips with its name at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi (R) and its mother Liang Liang eat bamboo at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi eats food near the bamboo slips with its name at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi eats food near the bamboo slips with its name at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.

Giant panda cub Yi Yi eats bamboo near the bamboo slips with its name at the giant panda conservation center of the Malaysian National Zoo near Kuala Lumpur, Malaysia, Aug. 1, 2019. The second giant panda born in Malaysia was named Yi Yi, meaning friendship, on Thursday, marking the close friendship between Malaysia and China.