IN a speech delivered at Seoul National University in the Republic of Korea on July 4,2014,Chinese President Xi Jinping told a story about a bone marrow donor.Zhang Bao is a Chinese volunteer donor whose blood sample matched that of a South Korean leukemia patient.After recovering from a car accident,he kept his promise to donate his bone marrow to the patient."Fate is unpredictable.It’s not a big deal to lend a hand when others are suffering,"Xi said,quoting Zhang’s words.The president said that of the 156foreign patients who received Chinese bone marrow,45 were South Korean–far surpassing the number from other countries."Moving stories like this can