Liz Truss today fired a warning shot at Beijing as she said the UK will be 'tough' on countries that 'don’t play by the rules'. The Foreign Secretary said 'it is important we trade with China ' but that trade must be 'reliable' and avoid 'strategic dependency'. Ms Truss also took aim at what she described as the 'voices of decline' as she argued 'Britain’s best days are ahead of us'. Liz Truss today fired a warning shot at Beijing as she said the UK will be 'tough' on countries that 'don’t play by the rules' The UK and China…