老謀深算

rigorous schemes and deep foresight (idiom); astute and circumspect

prefix used before the surname of a person or a numeral indicating the order of birth of the children in a family or to indicate affection or familiarity / old (of people) / venerable (person) / experienced / of long standing / always / all the time / of the past / very / outdated / (of meat etc) tough

to regard as / to figure / to calculate / to compute

old variant of 深[shen1]

deep / depth / deeply / (of a color) dark / deep / rich

deep (lit. and fig.)

to plan / to seek / scheme