WWX is a terrible farmer, he can't bargain too. Supplies are low in the Burial Mounds and WQ needs a find a way to earn.
She sets up a stall to sell sex talismans for people whose husbands don't get hard, whose wives complain about tiredness, young girls want bigger boobs, young men want to last longer etc. Soon young couples start coming in for advice, older couples want to spice up their sex-life etc.
WQ finds she is doing well, indeed maybe she has found her niche. For WWX, maybe the vibrating pillar is the invention he'll be known for, or maybe the contracting silk sleeve, or is it the talisman-linked cage?
The secret of their success? Since cinnabar is costly, they started to make talismans from cum - his and hers. The problem? Bigger the orgasm, better the potency. Now if only these singletons had some proper company...