In a similar logic that was shown when building the Kaluzhsko–Rizhskaya line, it was decided to postpone the central section in favour of building the new radial line, however after the opening of the new Zhdanovskaya line in late 1966, the passenger traffic between it and the former Kaluzhskaya line overstretched the capacity of the ring between Oktyabrskaya and Taganskaya. The two presented itself a unique opportunity and in late 1970 Moscow Metro's first cross-platform transfer point was opened at Kitay-Gorod.