Sri Lanka ordered a review of 35 investment projects Friday, most of them awarded to Chinese firms by the previous administration, suggesting ties remain fragile despite Beijing's attempts to assuage concerns. China has pledged one billion dollar in new grant money to Sri Lanka to address complaints that its investment was aimed at furthering its own strategic interests rather than Colombo's. The main dispute is over a port city project in Colombo that the government has suspended pending a review of approvals. But other road and port projects have come under scrutiny since the President Maithripala Sirisena took office in January.