** HK shares of China Southern Airlines 1055.HK rise 5.8% to HK$3.67, highest since March 31

** Stock set for biggest one-day pct rise since May 12

** Shanghai-listed stock 600029.SS climbs 0.7% to 5.94 yuan

** Chinese carrier says its April passengers carried rises 9.1% y/y; mail and cargo carried up 7.4% y/y

** YTD, HK stock loses 15%, Shanghai shares fall 8.6%

(Reporting by Donny Kwok)

((donny.kwok@thomsonreuters.com))