Statistics of level 1 packages for Chinese (Simplified) in unstable:
Read http://d-i.debian.org/l10n-stats

Outdated:

Translated:
  zipl-installer/*/debian/po/zh_CN.po 1t [YunQiang Su]
  s390-netdevice/*/debian/po/zh_CN.po 29t [Yangfl]
  s390-dasd/*/debian/po/zh_CN.po 16t [Yangfl]
  pkgsel/*/debian/po/zh_CN.po 12t [Boyuan Yang]
  partman-xfs/*/debian/po/zh_CN.po 2t [YunQiang Su]
  partman-target/*/debian/po/zh_CN.po 25t [Yangfl]
  partman-prep/*/debian/po/zh_CN.po 5t [YunQiang Su]
  partman-partitioning/*/debian/po/zh_CN.po 60t [Boyuan Yang]
  partman-md/*/debian/po/zh_CN.po 58t [Boyuan Yang]
  partman-lvm/*/debian/po/zh_CN.po 112t [Boyuan Yang]
  partman-jfs/*/debian/po/zh_CN.po 8t [Boyuan Yang]
  partman-ext3/*/debian/po/zh_CN.po 14t [Yangfl]
  partman-efi/*/debian/po/zh_CN.po 10t [玉堂白鹤]
  partman-crypto/*/debian/po/zh_CN.po 98t [Boyuan Yang]
  partman-basicmethods/*/debian/po/zh_CN.po 13t [Yangfl]
  partman-basicfilesystems/*/debian/po/zh_CN.po 84t [Yangfl]
  partman-base/*/debian/po/zh_CN.po 68t [Yangfl]
  partman-auto-lvm/*/debian/po/zh_CN.po 30t [Boyuan Yang]
  partman-auto/*/debian/po/zh_CN.po 24t [Yangfl]
  nobootloader/*/debian/po/zh_CN.po 15t [YunQiang Su]
  network-console/*/debian/po/zh_CN.po 24t [Boyuan Yang]
  netcfg/*/debian/po/zh_CN.po 123t [玉堂白鹤]
  net-retriever/*/debian/po/zh_CN.po 6t [Yangfl]
  mdcfg/*/debian/po/zh_CN.po 43t [Boyuan Yang]
  main-menu/*/debian/po/zh_CN.po 6t [YunQiang Su]
  lvmcfg/*/debian/po/zh_CN.po 80t [YunQiang Su]
  localechooser/*/debian/po/zh_CN.po 45t [Boyuan Yang]
  iso-scan/*/debian/po/zh_CN.po 31t [Boyuan Yang]
  hw-detect/*/debian/po/zh_CN.po 43t [Boyuan Yang]
  grub-installer/*/debian/po/zh_CN.po 57t [Boyuan Yang]
  finish-install/*/debian/po/zh_CN.po 9t [Yangfl]
  debian-installer-utils/*/debian/po/zh_CN.po 14t [YunQiang Su]
  clock-setup/*/debian/po/zh_CN.po 15t [玉堂白鹤]
  choose-mirror/*/debian/po/zh_CN.po 40t [Boyuan Yang]
  cdrom-retriever/*/debian/po/zh_CN.po 3t [玉堂白鹤]
  cdrom-detect/*/debian/po/zh_CN.po 29t [玉堂白鹤]
  cdrom-checker/*/debian/po/zh_CN.po 20t [玉堂白鹤]
  base-installer/*/debian/po/zh_CN.po 94t [玉堂白鹤]
  anna/*/debian/po/zh_CN.po 12t [玉堂白鹤]

Missing files:
  aboot-installer/*/debian/po/zh_CN.po 0u
  colo-installer/*/debian/po/zh_CN.po 0u
  floppy-retriever/*/debian/po/zh_CN.po 0u
  lilo-installer/*/debian/po/zh_CN.po 0u
  mountfloppy/*/debian/po/zh_CN.po 0u
  partconf/*/debian/po/zh_CN.po 0u
  partitioner/*/debian/po/zh_CN.po 0u
  partman-newworld/*/debian/po/zh_CN.po 0u
  partman-palo/*/debian/po/zh_CN.po 0u
  partman-reiserfs/*/debian/po/zh_CN.po 0u
  prep-installer/*/debian/po/zh_CN.po 0u
  quik-installer/*/debian/po/zh_CN.po 0u
  yaboot-installer/*/debian/po/zh_CN.po 0u


Global statistics: 1378t0f0u (100%)     (total strings: 1378=100%)
(From all zh_CN.po files)