These back-to-back developments – last year’s unexpected scandal caused by President Xi’s signing of such a fiercely anti-Iranian joint statement with the GCC and this weekend’s revelation of China’s dramatic underinvestment in Iran – indisputably prove that there are problems behind the scenes. China and Iran officially remain strategic partners, but some unseen factors are clearly responsible for Beijing’s reluctance to tap into Tehran’s full economic potential.
"President Xi’s signing of such a fiercely anti-Iranian joint statement with the GCC"?? Read it again. It's a joint offering to assist Iran in its fight with Israel and the US.