The big hitters started off strong on the first day of the Hong Kong Sevens, with the likes of South Africa setting out their stall. <br /> <br />Follow World Rugby on social media: <br />TWITTER.COM/RUGBYWORLDCUP <br />FACEBOOK.COM/RUGBYWORLDCUP <br />WWW.TWITTER.COM/WORLDRUGBY <br />FACEBOOK.COM/WORLDUGBY <br />INSTAGRAM.COM/WORLDRUGBY
