(AFP)— China gained another foothold in the booming wine trade with Bordeaux when a Chinese jewellery magnate added a chateau in the south west of France to his glittering assets. Richard Shen Dongjun's decision to buy Chateau Laulan Ducos is part of a broader Chinese investment boom that has begun to change trading strategies -- and even the taste of some wines -- in France's best known growing area. The 42-year-old CEO of Tesiro, a high-end retail jewellery chain, visited 40 vineyards before settling on his 22-hectare (54.36 acres) cru bourgeois estate at the remote tip of the Medoc region outside Bordeaux.