The Chinese pace can be compared to the Soviet approach from first unmanned Soyuz flights (1966) and first manned (1967) until the first Salyut station (1971): 5 years.<br />They launched manned Shenzhou 5 in 2003, and by 2008 they possibly will me putting a small lab in orbit.<br />From 1967 to 1971 the Soviet Union orbited Soyuz 1, rendesvoused Soyuz 2 and 3, docked Soyuz 4 and 5, flew 6, 7 and 8 (almost) together, sent Soyuz 9 in a 18-day flight and docked Soyuz 10 and 11 to Salyut 1.<br />There was pressure to accomplish space firsts, and there was a call for space spectacles. And there were accidents, of course.<br />Several setbacks marred each of these missions, mainly due to haste.<br />It seems that the Chinese have no hurry because they are preparing each mission combining the earlier with the next (the orbital modules of each SZ are left into orbit and performs their own research program, leading to mission duration time well beyond Soyuz - wich orbital modules decayed at retrofire).<br />So, SZ6 will test a longer flight (more or less Soyuz 3 but with no docking planned); Problably SZ7 and 8 will be docked and/or an EVA will be tested (?) combining the flight objectives of Soyuz 4 to 8; And a small space lab (combining longer duration flights of Soyuz 9 and dockings of Soyuz 10 and 11) could be in the sight of SZ9... Who knows?<br /><br />So it seems that the Chinese are, like Toymaker said, very patient, and their program is actually managed in a slow pace because they are combining several steps forward in a single mission.