keychron_qmk_firmware/keyboards/soy20/keymaps/default/keymap.c

#include QMK_KEYBOARD_H

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {

	[0] = LAYOUT_ortho_5x4(
		KC_PMNS, KC_PAST, KC_PSLS, MO(1),
		KC_PPLS, KC_P9, KC_P8, KC_P7,
		KC_TAB, KC_P5, KC_P6, KC_P4,
		KC_PENT, KC_P3, KC_P2, KC_P1,
		KC_DEL, KC_SCLN, KC_PDOT, KC_P0),

	[1] = LAYOUT_ortho_5x4(
		KC_NUM,  KC_PSCR, KC_TRNS, KC_TRNS,
		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
		KC_TRNS, KC_TRNS, KC_TRNS, QK_BOOT),

};