As China’s National Day holiday approaches, prices of hairy crabs, one of the most popular seasonal gifts at this time of the year, are down markedly as the first batches are delivered to markets across the country.Industry insiders predict that prices will fall further, citing higher production, shrinking gift-giving demand and weak household spending.Businesses and wealthy individuals have long regarded hairy crabs, which are prized for their unique flavour, as an ideal gift for clients and...