China vs Tajikistan

China's $1,100/mo monthly cost (across 5 scored cities); Tajikistan has no monthly cost data yet — not enough data to call a winner.

China's 3.3/5 safety score (across 5 scored cities); Tajikistan's 1.7/5 safety score (across 1 scored city) — not enough data to call a winner.

China's 3.3/5 mobility score (across 5 scored cities); Tajikistan's 1.4/5 mobility score (across 1 scored city) — not enough data to call a winner.

China's 3.5/5 culture score (across 5 scored cities); Tajikistan's 0.4/5 culture score (across 1 scored city) — not enough data to call a winner.

China's passport reaches 52 destinations visa-free to Tajikistan's 21 — China opens more doors without a visa. Passport strength shifts over years of naturalisation, not months of planning, so it's a long-horizon footnote — not scored in the tally.

China's 755M passengers/yr annual passenger volume (across 18 scored cities); Tajikistan has no annual passenger volume data yet — not enough data to call a winner.

China runs -10°C to 37°C for most people; Tajikistan runs -10°C to 39°C for most people. Harbin runs colder, at -34°C; Khorugh runs colder, at -30°C. Depends on you — which range fits your tolerance is the real question here, not a score.