A system for guiding a search for information is presented. The separated air valve openings are independently controllable to open or close by the float units arranged in one-to-one correspondence thereto. The cutting edge ridge is rounded with a radius of less than 100 nm, the first conical surface has a width of 1 to 5 \u03bcm, and a swarf release face substantially perpendicular to a cutting direction is provided in a portion on a side of the first conical surface opposite a line of the cutting edge ridge. The securing panel includes a panel body and a first resisting tab and a second resisting tab extending from the panel body. The handwriting displaying on the electrochromic board is the same as a touch route sensed by the touch panel. The process can be employed to transfer hydrogenate ketones and imines, which are preferably prochiral.