Brazilian Rafael Andriato (Wilier Triestina) claimed the 88.3km opening stage in Xinglong, China.
The "HNA CUP" Tour of Hainan is to be held from October 22th to 30th.
Astana’s Ruslan Tleubayev (KAZ) came out on top, followed by teammate and fellow countryman Alexey Lutsenko (KAZ).
German giant Max Walscheid (Giant-Alpecin) outmuscled the bunch sprint to claim his first pro win
Giant-Alpecin’s Max Walscheid makes it two straight stage wins at the Tour of Hainan to hold on to yellow for another day
Germansprinter Max Walscheid (Giant-Alpecin) once again proved he was head of the class with a stage 5 win.
Slovenian Matej Mohoric bridged a 30-second gap in the final 12km to claim the first pro win of his career.
Max Walscheid clipped Australian sprinter Brenton Jones (Drapac) at the finish of stage 7
Astana's Alexey Lutsenko overcomes final day in the mountains to claim stage 8 and tighten grip on yellow.
German sprinter Max Walscheid got one for the thumb as he sprinted across the line for his fifth stage win.