探索 tan4suo3 quest explore probe
探hand groping about in a cave for structured patterned substance tan4 探
explore, search, scout visit
索suo3 search, rope, cable.
索 great master on top; small silk below = man with rope, pulling it as idea of SEARCHING, REQUESTING
系统 xi4tong3 system
bind+tie all together
Research.
系 line on top means bound silk in the middle small on the bottom = small silk thread is BOUND, BIND
统 tong = all tied together
xitong = system