<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.cui tiankai amesema, ushirikiano wa kimajimbo na kimikoa ni sehemu muhimu ya uhusiano kati ya china na marekani, ambao pia unatakiwa kuwa ongezeko jipya la ushirikiano kati ya nchi hizo mbili katika siku za baadaye.  <response>: he noted energy is a key area of cooperation between his country and iran, adding key agreements have been signed between the two countries over the past several years. 