The 18-year-old qualifier came back from one set down to beat the seventh seeded Lu 8-21, 21-9, 21-19.

The China-born Fu, who became a citizen here three years ago, will meet Dutchwoman Judith Meulendijks in the next round.

Fu's teammate, Zhang Beiwen, also nearly dumped out another Chinese star.

Zhang, 18, came within a whisker of beating world No 4 Wang Lin, before losing 21-10, 18-21, 19-21.