Two thousand years of advice for lovers...

and we're still trying to figure it out. Times Online, on a chronology that you may not want to peruse during work hours:

"The tradition of bestselling love guides goes back to the Ancient Chinese. Our earliest known manuals were first written in 300BC and buried in a family tomb at Mawangdui, in Hunan province. Recent translation reveals the timeless nature of the subjects they tackled...

As ever, it was all nonsense: home-made Viagra recipes involved ingredients such as beetle larvae, wasps and dried snails. The books also promised that any man who had sex with a different virgin every night for 100 nights without ejaculating would live for ever (albeit rather uncomfortably)..."